I Want to Make 100 ml Reed Diffusers That Maintain Noticeable Throw Without Excessive Evaporation in Summer — Which Raw Materials Should I Test First?

I Want to Make 100 ml Reed Diffusers That Maintain Noticeable Throw Without Excessive Evaporation in Summer — Which Raw Materials Should I Test First?

I Want to Make 100 ml Reed Diffusers That Maintain Noticeable Throw Without Excessive Evaporation in Summer — Which Raw Materials Should I Test First?

 

Listed reed bottles: 50 ml ₹82.60 · 120 ml ₹106.20 White fibre reeds ₹9.00 each at the 100-pack Stocked in India · ships nationwide
CSI diffuser guides · specifying a 100 ml product
There is no 100 ml reed bottle in the range. There is a 120 ml bottle you can fill to 100 ml — and that choice puts you back inside the published reed band.
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"Nice product"
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Gold Reed Diffuser Bottle
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Lift Base for Reed & Candle
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Sandalwood Fragrance Oil
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Woody Oud Fragrance Oil
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Lavender Fragrance Oil
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Citrus Lemon Fragrance Oil
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British Rose Fragrance Oil
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"One of the best fragrance oils"
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Dark Vanilla Fragrance Oil
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"Really nice fragrance, we continue our shopping going forward."
Uchu OmoideVerified buyer · Sep 2025
Fresh Strawberries Fragrance Oil
Reviews collected and published through Judge.me on candlemakingsuppliesindia.store. Wording is unedited. Most are observations from candle making rather than reed diffusers — CSI's reed range is newer and its review history is thin.
Shop reed diffuser bottles — 50 ml and 120 ml Ask about a 100 ml build
✓ Stated specifications quoted only where a page publishes them ✓ 18 products in the reed diffuser base collection ✓ Bulk pricing & GST invoicing on WhatsApp
CSI Diffuser Guides · Specifying a 100 ml Product

I Want to Make 100 ml Reed Diffusers That Maintain Noticeable Throw Without Excessive Evaporation in Summer — Which Raw Materials Should I Test First?

Start with the awkward fact: CSI does not list a 100 ml reed diffuser bottle. The reed bottle product lists a 50 ML pack of 10 at ₹826 and a 120 ML pack of 10 at ₹1,062, and nothing between them. That is not a detail to work around — it decides your hardware cost per millilitre, it decides whether the one published reed-count band in the range applies to you at all, and it makes the first material you test the glass rather than the oil. Fill the listed 120 ml bottle to 100 ml and both problems resolve at once.
₹1.42 / ml
120 ml glass ₹106.20 + eight black reeds ₹64.00 = ₹170.20 of hardware over a full 120 ml. The 50 ml route is ₹2.61/ml — 1.84× dearer per millilitre · CSI lists no 100 ml reed bottle · CSI live pricing, October 2026
Quick answers — read this first
Does CSI sell a 100 ml reed diffuser bottle? No. The listed variants are 50 ML Pack of 10 at ₹826 (₹82.60 each) and 120 ML Pack of 10 at ₹1,062 (₹106.20 each), both available. There is no 100 ml and no 200 ml reed bottle in the range. The page's own body copy says "Size: 50 and 100ml" against those 50 ML and 120 ML variants — a published inconsistency, named here and not resolved.

So what do I build? Either two products at 50 ml, or — usually better — the 120 ml bottle filled to 100 ml. Hardware is ₹170.20 with eight reeds, which is ₹1.702 a millilitre at a 100 ml fill against ₹2.612 at 50 ml.

Why does the fill matter beyond cost? Because of the band. The only reed-count guidance CSI publishes is "6-8 reeds for a standard 50-100ml bottle" — which covers a 100 ml fill and does not cover the 120 ml bottle the same range sells.

Which raw material do I test first? Not the oil. Test in the order that things get locked: vessel, fill, load, reeds, base, oil — because the vessel decides the reed band and the per-millilitre cost, and the oil is the only one you can change later without re-costing anything else.

Throw without evaporation? They are the same transport read from two ends. Measure both, always.
The short answer
The unit is the rupee of hardware per millilitre of fill. ₹1.42/ml at a full 120 ml with eight reeds, ₹1.702/ml at a 100 ml fill with eight, ₹1.542/ml at a 100 ml fill with six, and ₹2.612/ml at 50 ml with six. Downsizing costs you 1.84× per millilitre.
Fill the 120 ml bottle to 100 ml and the published reed band applies again. "6-8 reeds for a standard 50-100ml bottle" is the only reed guidance in the range; a 120 ml bottle is outside it, a 100 ml fill is inside it.
Nothing published can rank materials for throw or for evaporation. No CSI oil, base, reed or bottle page states a volatility, a viscosity, an evaporation rate, a heat-stability figure or a density. Grams lost over time plus a fragrance-intensity score is the measurement, and both halves are yours.
Shop: Reed Bottles · White Fibre Reeds · Eucalyptus Spearmint · Vetiver · bulk on WhatsApp.
In this guide
Four routes to a 100 ml-class product — bar length is hardware cost per millilitre 50 ml bottle 6 reeds ₹2.612 / ml — ₹82.60 glass + ₹48.00 reeds = ₹130.60 over 50 ml IN BAND 120 ml bottle 100 ml fill, 8 reeds ₹1.702 / ml — ₹170.20 over 100 ml IN BAND 120 ml bottle 100 ml fill, 6 reeds ₹1.542 / ml — ₹154.20 over 100 ml IN BAND 120 ml bottle full fill, 8 reeds ₹1.418 / ml — ₹170.20 over 120 ml OUTSIDE 6–8 REED BAND No bar on this chart is a 100 ml bottle, because CSI does not list one. Band status is against the published line "6-8 reeds for a standard 50-100ml bottle" — the only reed guidance in the range. Reeds at the pack-of-100 black rate of ₹8.00. Nothing here predicts throw or evaporation; no CSI page publishes either.
The cheapest route per millilitre is the one at the bottom, and it is the only one outside the published reed band. The third bar — a 120 ml bottle filled to 100 ml with six reeds at ₹1.542 a millilitre — is the route that is both cheap and covered by published guidance, and it is where most 100 ml specifications should start. The top bar is what downsizing to the listed 50 ml really costs: ₹2.612 a millilitre, 1.84 times the full 120 ml rate.
The two sizes that exist
Gold Reed Bottles · 50 ml ₹82.60 · 120 ml ₹106.20
Falls at every rung · kilo saves ₹236
Eucalyptus Spearmint · ₹354 / 100 g · ₹3.54 a gram
Need a 100 ml vessel specifically?
Ask us what is available on WhatsApp
Straight answer
Which raw materials should I test first for a 100 ml summer reed diffuser?
The glass, before anything else — because CSI lists no 100 ml reed diffuser bottle, and until you have settled what vessel you are actually building in, nothing else can be costed or compared. The reed bottle product lists two variants, both available: a 50 ML Pack of 10 at ₹826, which is ₹82.60 a bottle, and a 120 ML Pack of 10 at ₹1,062, which is ₹106.20. Nothing between them, and no 200 ml either. So a 100 ml product is built one of two ways, and the arithmetic is decisive: at 50 ml with six reeds your hardware is ₹82.60 + ₹48.00 = ₹130.60, or ₹2.612 a millilitre; filling the 120 ml bottle to 100 ml with six reeds is ₹106.20 + ₹48.00 = ₹154.20, or ₹1.542 a millilitre. Downsizing to the listed 50 ml costs you 1.84 times as much hardware per millilitre as a full 120 ml bottle, which is the kind of figure that quietly removes a product's margin. There is a second reason to prefer the 100 ml fill, and it is about published guidance rather than money: the only reed-count line CSI publishes anywhere is "6-8 reeds for a standard 50-100ml bottle", and a 120 ml bottle sits outside that band while a 100 ml fill sits inside it. Fill the larger listed bottle to 100 ml and you get the cheaper glass rate and the published band at the same time. After the vessel, the order is fill, then load, then reed count, then base, then oil — set out in detail below — and it is ordered by what each decision locks rather than by what each one costs. One caution on the bottle page itself: its body copy says "Size: 50 and 100ml" against its own 50 ML and 120 ML variants. That is a published inconsistency; it is named here, it is not resolved here, and if a 100 ml vessel specifically matters to your product, ask us on WhatsApp rather than ordering on the strength of the body text.
One line: there is no 100 ml bottle — fill the 120 ml to 100 ml, pay ₹1.542 a millilitre in hardware instead of ₹2.612, and the published 6–8 reed band applies again.
The hardware for ten 100 ml-class units: one 120 ML Pack of 10 at ₹1,062 and a pack of 100 black fibre reeds at ₹800 gives you sixty reeds used, forty spare, and ten identical vessels. Add the ₹354 scale and you can fill to 100 ml by weight instead of by eye, which is the single largest avoidable source of unit-to-unit variation.
Buy 120 ml bottles

There is no 100 ml reed bottle — what to compute at instead

A size that is not listed cannot be costed. Compute at the sizes that exist and say which you chose.

This matters more than it sounds. A great many 100 ml reed diffuser specifications are written against a vessel the maker has not sourced, and everything downstream — the base per bottle, the oil per bottle, the yield per pack, the reed count, the cost per unit, the price point — is then built on a number that will change when the real bottle arrives. So the honest first step is to write down the vessel you can actually buy today, from the product page, with its variant name and its price.

What the reed bottle product actually lists · checked per variant
Two sizes, both available — and what each one gives you
Listed variant Pack price Per bottle Availability What it is good for
50 ML Pack of 10 ₹826 ₹82.60 Available Small gift and sampler formats; inside the published reed band
120 ML Pack of 10 ₹1,062 ₹106.20 Available Full-size retail; cheapest glass per millilitre; outside the reed band
120 ML filled to 100 ml ₹1,062 ₹106.20 Available The 100 ml route: cheap glass and the published band together
100 ml bottle — — Not listed Ask on WhatsApp; do not cost a product against it
200 ml bottle — — Not listed Ask on WhatsApp; do not cost a product against it

Two further things the page tells you that belong in a plan. First, larger packs are listed at 16 and 24 as well as 10, which is 160 and 240 bottles at the top end — so glass is the binding line on any sizeable order long before base or oil becomes one. Second, the body copy on that page describes the product as "Size: 50 and 100ml" while its own purchasable variants are 50 ML and 120 ML. Name it once, do not build on it, and ask. A product specification should rest on variant names and prices, which are unambiguous, rather than on descriptive text, which in this case is not.

The mistake: deciding the fill before deciding the vessel. It feels natural — you want a 100 ml product, so you write 100 ml at the top of the sheet and go looking for oils. But fill is a consequence of vessel, and vessel is the one decision that locks your hardware cost per millilitre, your yield per base pack, your reed band eligibility, your label size and your shipping carton. The fix is to buy one pack of each listed size before you blend anything — ₹826 and ₹1,062, ₹1,888 for twenty bottles — fill a couple of each at your intended load, and look at them. A 100 ml fill in a 120 ml bottle leaves a visible air gap above the liquid, and whether that reads as "generous" or as "short-filled" on your shelf is a judgement nobody can make for you from a product page.

Hardware per millilitre: ₹1.42, ₹1.54, ₹1.70 and ₹2.61

Hardware — glass plus reeds — is the part of a reed diffuser that does not scale with the fill. A 50 ml bottle does not cost half of a 120 ml bottle; it costs 77.8% of it. So every millilitre you take out of the vessel makes the fixed cost heavier, and the effect is much larger than most spec sheets assume.

Hardware cost per millilitre of fill · black fibre reeds at the pack-of-100 rate of ₹8.00
Four routes, and what downsizing really costs
Route Glass Reeds Hardware Per ml of fill Against the full 120 ml
120 ml bottle, full, 8 reeds ₹106.20 ₹64.00 ₹170.20 ₹1.4183 1.00× — the floor
120 ml bottle, 100 ml fill, 6 reeds ₹106.20 ₹48.00 ₹154.20 ₹1.542 1.09×
120 ml bottle, 100 ml fill, 8 reeds ₹106.20 ₹64.00 ₹170.20 ₹1.702 1.20×
50 ml bottle, 6 reeds ₹82.60 ₹48.00 ₹130.60 ₹2.612 1.84×
50 ml bottle, 8 reeds ₹82.60 ₹64.00 ₹146.60 ₹2.932 2.07×
Worked out above: glass is ₹826 ÷ 10 = ₹82.60 and ₹1,062 ÷ 10 = ₹106.20; black fibre reeds are ₹800 ÷ 100 = ₹8.00 each, so six is ₹48.00 and eight is ₹64.00. Hardware totals ₹170.20, ₹154.20, ₹170.20, ₹130.60 and ₹146.60, divided by the fill in millilitres: 170.20 ÷ 120 = ₹1.4183, 154.20 ÷ 100 = ₹1.542, 170.20 ÷ 100 = ₹1.702, 130.60 ÷ 50 = ₹2.612 and 146.60 ÷ 50 = ₹2.932. Ratios against the full-bottle floor: 1.542 ÷ 1.4183 = 1.09, 1.702 ÷ 1.4183 = 1.20, 2.612 ÷ 1.4183 = 1.84 and 2.932 ÷ 1.4183 = 2.07. Glass alone: ₹82.60 ÷ ₹106.20 = 77.8%, so a 50 ml bottle costs 77.8% of a 120 ml one for 41.7% of the volume. At the pack-of-25 reed rate of ₹9.44 instead, six reeds is ₹56.64 and eight is ₹75.52, which moves the 120 ml full route to ₹181.72 of hardware and ₹1.5143 a millilitre.

Now add the liquid, so you can see the whole unit. At a 100 ml fill and the published 25% working ratio the blend is 75 ml of base and 25 g of oil; at 20% it is 80 ml and 20 g, and at the published 30% maximum it is 70 ml and 30 g. The base costs ₹2.198 a millilitre on any of the four ₹1,099 packs, and the yield per pack moves usefully with the load.

A 100 ml fill across the published 10–30% window · base at ₹1,099 / 500 ml
Liquid cost, bottles per base pack, and the whole unit with hardware
Load Base Oil Base cost Bottles per 500 ml pack Unit with ₹170.20 hardware, oil excluded
10% — the published start 90 ml 10 g ₹197.82 5.56 ₹368.02
20% 80 ml 20 g ₹175.84 6.25 ₹346.04
25% — the published working ratio 75 ml 25 g ₹164.85 6.67 ₹335.05
30% — the published maximum 70 ml 30 g ₹153.86 7.14 ₹324.06
On Longevity at ₹1,296 / 500 ml, 25% 75 ml 25 g ₹194.40 6.67 ₹364.60 — ₹29.55 dearer
Fill by weight, not to a line
A 100 ml fill set by eye against a bottle shoulder will vary by several millilitres between units, and that variation lands directly on your grams-per-day figures and on your cost per unit. Put the empty bottle on the ₹354 scale, zero it, and fill to a target mass you have fixed for the SKU. Do not try to convert between millilitres and grams — no density is published for any CSI base or oil — so establish the target mass once by filling one bottle carefully to your intended level, then reproduce that mass on every unit afterwards.

The published reed band covers a 100 ml fill, not a 120 ml bottle

The fibre reed pages publish the only reed-count guidance in the entire CSI range, and it is worth quoting exactly: "6-8 reeds for a standard 50-100ml bottle", described as the "optimal balance of scent throw and longevity". The same pages add two more qualitative lines that bear directly on a summer product — "use 10+ for maximum throw in larger rooms — the base will evaporate faster at higher reed counts", and "avoid placing in direct sunlight or near heat sources which accelerate evaporation". Both are directional statements with no rate attached, which is exactly what they should be.

Set that band against the two listed bottles and the gap is obvious. 50 ml is covered. A 100 ml fill is covered, at the top of the stated range. The 120 ml bottle is not covered at all — and it is a bottle the same range sells. That is not a reason to avoid the 120 ml vessel; it is a reason to prefer a 100 ml fill in it when you have a choice, because it keeps you inside published guidance for free, and published guidance is worth something when a customer asks why you chose eight reeds.

Reed count at a 100 ml fill · both listed colours
What each count costs, in black and in white, inside the published band
Reeds Black at ₹8.00 White at ₹9.00 White premium Band status at a 100 ml fill
6 ₹48.00 ₹54.00 ₹6.00 Inside — the bottom of the band
7 ₹56.00 ₹63.00 ₹7.00 Inside — mid-band
8 ₹64.00 ₹72.00 ₹8.00 Inside — the top of the band
10 ₹80.00 ₹90.00 ₹10.00 Outside — the page notes faster evaporation here
At the pack-of-25 rate ₹9.44 a reed ₹10.60 a reed ₹1.16 Use for trial stock, not production
Priced above: black fibre reeds ₹236 / 25, ₹400 / 50, ₹800 / 100, ₹4,000 / 500 — ₹9.44 a reed at the 25-pack and a flat ₹8.00 from 50 up; white ₹265 / 25, ₹450 / 50, ₹900 / 100, ₹4,500 / 500 — ₹10.60 then a flat ₹9.00. All eight variants available. The white premium is ₹1.16 a reed at the 25-pack and exactly ₹1.00 above it, which is the only quantified difference between the two: no diameter, pore size or fibre count is published for either, and both state a 20.3 cm length. Counts above are reeds × the per-reed rate. If you need to compare two reeds without a published diameter, soak and weigh them: grams gained ÷ reed count.
Do not chase throw with reed count alone. The reed page's own line is the warning: more reeds give more throw and faster base consumption, because they are the same mechanism. If your summer problem is that the bottle empties too fast, adding reeds to recover throw will make the emptying worse, and you will end up cycling between two complaints. The fix is to treat reed count as a dial you set once per SKU after a weighed comparison, and to look elsewhere — load, vessel, fill — when you need to move throw and consumption in different directions. Record a fragrance-intensity score beside every weight, by the same person at the same distance and time of day, so you can actually see the trade rather than guessing at it.

Throw and evaporation are one process read from two ends

Your title asks for noticeable throw without excessive evaporation, and it is worth being clear that those are not two independent dials. Fragrance reaches a room because liquid travels up a reed, arrives at an exposed surface and leaves it. The liquid leaving the bottle and the smell arriving in the room are the same transport event described from opposite ends. You cannot maximise one and minimise the other; what you can do is find a position on the trade that your customers accept and that your margin survives.

That has a direct consequence for how you test. Every comparison in this development programme carries two columns: grams lost per day, and a fragrance-intensity score taken as you walk into the room before touching anything. A change that improves one column and silently damages the other is not an improvement, and a single-column test will hide that every time. It also has a consequence for how you judge any base that promises to slow things down: a slower-evaporating base is not automatically a better base, because if it restricts wicking or release the bottle lasts longer and smells of less. Judge any carrier change on consumption and throw, never on days alone.

The two columns, and what each candidate change does to them
Expected direction only — the size is yours to measure
Change Grams per day Fragrance intensity What published guidance says
Fewer reeds Lower Lower "The base will evaporate faster at higher reed counts"
More reeds Higher Higher "Use 10+ for maximum throw in larger rooms" — above the band
Higher load, inside 10–30% Not predicted Not predicted Nothing; the window is formulation guidance only
A different base Not predicted Not predicted Page claims only — "slows evaporation", "extended cold diffusion"
A smaller fill in the same bottle Not predicted Not predicted Nothing; no neck diameter is published for any bottle
Direct sun or a heat source Higher Not predicted "Avoid placing in direct sunlight or near heat sources which accelerate evaporation"

Four of those six rows say "not predicted", and that is the honest state of the published information. No CSI page states a volatility, a viscosity, an evaporation rate, a flash point used as a working temperature, a heat-stability figure, a storage temperature, a shelf life or a density for any base, oil, reed or bottle, and no neck diameter is published for either bottle size — so bottle geometry is a measurement you take with a ruler, not a specification you look up, and a vessel change is a re-qualification rather than a tweak. That is why the development order below is about locking decisions rather than about predicting outcomes.

What each decision locks, and the order that follows

The sequence below is not ordered by price. It is ordered by how much else each decision fixes in place, because the expensive mistake in product development is not buying the wrong material — it is having to re-cost and re-test four other decisions because you changed one of them late.

1
Vessel — locks hardware per millilitre, reed band eligibility, label and cartonBuy one pack of each listed size, ₹826 and ₹1,062, and decide with twenty bottles in front of you. The 120 ml at ₹106.20 is 77.8% of nothing cheaper and gives you the lowest hardware rate per millilitre; the 50 ml at ₹82.60 costs ₹2.612 a millilitre against ₹1.4183. No neck diameter is published for either, so if neck geometry matters to your build, measure it yourself and record it as a spec line. Once this is chosen, do not revisit it without re-running everything after it.
2
Fill — locks yield per base pack, the reed band, and your price pointA 100 ml fill in the 120 ml bottle is the decision this whole page points at: ₹1.542 a millilitre of hardware with six reeds, inside the published "6-8 reeds for a standard 50-100ml bottle" band, and 6.67 bottles from each 500 ml base pack at the published 25% ratio. Set the fill as a target mass on the scale, not a line on the glass. Then look at the air gap above the liquid and decide whether you are happy to sell it.
3
Load — locks cost per kilo of blend and sets your compatibility riskAll five bases publish the same window: "Blend with 10-30% fragrance oil", a working ratio of 25–30% oil to 70–75% base, and a 24–48 hour rest before bottling. Pick one value and hold it across the SKU. Remember the arithmetic: cost per kilo of blend is linear in the load, so the cheapest load is always an endpoint of the window and never a middle value — and on an oil cheaper per gram than the base, a higher load actually lowers cost per kilo. Then test the chosen load for clarity and for separation after the rest.
4
Reed count — the only reversible decision on the listBuild three units at 6, 7 and 8 reeds with everything else identical, and run them side by side in the same room with weights and intensity scores at days 0, 3, 7, 14, 21 and 28. Black costs ₹8.00 a reed at the 100-pack and white ₹9.00; the ₹1.00 gap is the only quantified difference between them, since no diameter or pore size is published for either. You can change this one later without re-costing anything else, which is exactly why it comes after the three decisions you cannot.
5
Base — qualify on the ₹325 pack before committing ₹1,099Pure Performance lists a 100 g pack at ₹325, the only sub-₹1,000 base purchase in the range and the right way to find out whether a carrier behaves in your vessel at your load before buying a litre. Four bases are ₹1,099 for 500 ml and Longevity is ₹1,296, which is ₹29.55 more per 100 ml bottle at the published 25% ratio. None of the five publishes an evaporation figure, so this is a measured comparison or it is nothing — and rule one applies: a base that slows the liquid may also slow the smell.
6
Oil — last, because it is the one thing you can change without re-costing the restQualify two or three candidates at the 50 g rung, which at a 100 ml fill and 25% is two bottles' worth per oil. Run each against the others with vessel, fill, load, reeds and base all frozen, weigh them, score them, and keep one cool-stored control per candidate — capped, no reeds, in your coolest place — so that any odour question later has a reference from the same batch rather than a memory. Nobody can tell you which oil holds up in heat; no CSI oil page publishes a figure that would support such a statement, and a coded blind comparison against that control is the only honest way to ask.
Do not screen for summer by baking a bottle for a week and multiplying. A short run somewhere warm is a legitimate screening test for change — cloudiness, separation, sediment, a colour shift, an odour a blind panel can tell apart from the cool-stored control — and those are worth catching in development rather than in a customer's living room. It is not a compressed version of real time, and no multiplier converts an accelerated result into a life figure. If you need to know how long your 100 ml unit lasts, that number is usable liquid ÷ your own measured grams per day, in the conditions you intend to claim for, measured on more than one unit, with both halves labelled. For the full weighed protocol see the 30-day test guide.

What to buy, and at which rung

The glass and the reeds first, because those are the decisions that lock the rest; then two oils with genuinely different pack ladders to qualify at the 50 g rung. None of the oils below is selected for heat behaviour or for throw, because nothing published would support such a selection.

1
Decision one · and the size that is not there
Gold Reed Diffuser Bottle Pack of 10 (50 ML and 120 ML)
The only reed diffuser bottle product in the range, and the reason this page exists. Two variants, both available at the time of writing: 50 ML Pack of 10 at ₹826 (₹82.60 a bottle, 16 packs in stock) and 120 ML Pack of 10 at ₹1,062 (₹106.20 a bottle, 24 packs in stock). There is no 100 ml and no 200 ml variant, so a 100 ml product is either two 50 ml units or — better on both cost and published guidance — a 120 ml bottle filled to 100 ml. Only packs of 10 are listed; stock stands at 16 packs of 50 ml and 24 of 120 ml, which caps a single order at 160 and 240 bottles. Beyond that is a quote. No neck diameter is published for either size, so if neck geometry matters to your build, measure it with a ruler and write it into your own spec. One published inconsistency to be aware of: the page's body copy says "Size: 50 and 100ml" while the purchasable variants are 50 ML and 120 ML — named here, not resolved here, and worth a WhatsApp message if a 100 ml vessel specifically matters. A CSI customer, snehal Chaudhary, records "Nice product".
Variant Price Per bottle Hardware per ml with 6 reeds
50 ML Pack of 10 ₹826 ₹82.60 ₹2.612
120 ML Pack of 10 ₹1,062 ₹106.20 ₹1.285 at a full fill
120 ML filled to 100 ml ₹1,062 ₹106.20 ₹1.542
Stock on hand 16 and 24 packs 160 and 240 bottles The ceiling on a single order
₹1,888 buys one pack of each size — twenty bottles to decide with Buy reed diffuser bottles
2
Decision four · the reversible dial, in the dearer colour
Fiber Diffuser Reeds (White) Premium Quality Engineered for fragrance
The white reed exists for one reason — it looks different in a clear bottle — and it costs exactly ₹1.00 a reed more than black above the 25-pack: ₹265 / 25, ₹450 / 50, ₹900 / 100, ₹4,500 / 500, which is ₹10.60 a reed at 25 and a flat ₹9.00 from 50 up, against black's ₹9.44 and ₹8.00. At the 25-pack the gap is ₹1.16. On a six-reed 100 ml unit that is a ₹6.00 premium per bottle, and on a 240-bottle run at six reeds it is ₹1,440 — a real line item for a cosmetic choice, which is worth deciding deliberately rather than by default. Published specifications are identical to the black: 20.3 cm, "uniform pore structure — no swelling, no clogging, no splitting", "consistent diffusion from day 1 to day 30", and 6–8 reeds for a standard 50–100 ml bottle. No diameter, pore size or fibre count is published for either colour, so the ₹1.00 gap is the only quantified difference between them. All four packs available.
Pack White price Per reed Black, for comparison
Pack of 25 ₹265 ₹10.60 ₹236 · ₹9.44 — gap ₹1.16
Pack of 50 ₹450 ₹9.00 ₹400 · ₹8.00 — gap ₹1.00
Pack of 100 ₹900 ₹9.00 ₹800 · ₹8.00 — gap ₹1.00
Pack of 500 ₹4,500 ₹9.00 ₹4,000 · ₹8.00 — gap ₹1.00
₹54.00 for six white reeds against ₹48.00 for six black Buy white fibre reeds
3
Oil candidate one · falls at every rung
Eucalyptus Spearmint Fragrance Oil | Candle Fragrances
A fresh, sharp profile for the first oil arm, and one of the better volume ladders in the range: ₹4.5627 a gram at 15 g, ₹4.248 at 50 g, ₹3.54 at 100 g, ₹3.304 at 500 g and ₹3.068 at the kilo — falling at every single rung, with the kilo saving ₹236 against two 500 g packs. Qualify it at ₹212.40 for 50 g, which at a 100 ml fill and the published 25% ratio is two bottles' worth with nothing spare. At the 100 g rung it carries ₹88.50 of oil in a 100 ml bottle, putting a full unit at ₹423.55 including base and hardware. Stock is uneven: 100 gm is down to 28 units while 500 gm and 1 kg are deep. As with every oil here, no volatility, viscosity, evaporation or heat figure is published on this page or any other — it is a candidate for your weighed comparison, not a recommendation for summer.
Size Price Per gram 100 ml bottles at 25%
15 gm ₹68.44 ₹4.5627 Half a bottle
50 gm ₹212.40 ₹4.248 2 bottles exactly
100 gm ₹354 ₹3.54 4 bottles
500 gm ₹1,652 ₹3.304 20 bottles
1 kg ₹3,068 ₹3.068 40 bottles · kilo saves ₹236
₹88.50 of oil in a 100 ml bottle at the 100 g rung Buy Eucalyptus Spearmint
4
Oil candidate two · a heavier profile, and thin stock
Vetiver Fragrance Oil | Candle Fragrances
A dry, rooty, grounding profile — structurally the opposite of a sharp fresh oil, which is the point of putting it in the same comparison. Its ladder also falls at every rung, and steeply at the bottom: ₹12.508 a gram at 15 g, ₹7.08 at 50 g, ₹6.00 at 100 g, ₹5.80 at 500 g and ₹5.664 at the kilo, with the kilo saving ₹136 against two 500 g packs. The 15 g to 50 g step alone is a 43.4% per-gram drop, so there is no reason to buy the smallest pack. Qualify at ₹354 for 50 g — two bottles at a 100 ml fill and 25% — and expect ₹150.00 of oil per bottle at the 100 g rung, for a unit at ₹485.05. Check stock on the day: at the time of writing 100 gm is at 9 units, 500 gm at 3 and 1 kg at 5, with the 15 gm and 50 gm rungs better supplied. If this one wins your comparison, talk to us about availability before you build a range around it.
Size Price Per gram Stock note
15 gm ₹187.62 ₹12.508 93 units — but the dearest rung by far
50 gm ₹354 ₹7.08 28 units — the qualification rung
100 gm ₹600 ₹6.00 Thin — 9 units
500 gm ₹2,900 ₹5.80 Thin — 3 units
1 kg ₹5,664 ₹5.664 Thin — 5 units · kilo saves ₹136
₹150.00 of oil in a 100 ml bottle at the 100 g rung Buy Vetiver
The CSI principle
Specify the vessel you can buy, not the one you had in mind. Everything downstream is priced off it.
CSI lists no 100 ml reed diffuser bottle, and pretending otherwise puts a wrong number under every line of your costing. The listed 50 ml and 120 ml sizes give you four honest routes to a 100 ml-class product, and the arithmetic between them — ₹1.42 to ₹2.61 of hardware a millilitre — is larger than most of the decisions makers agonise over. Start there, then measure.
The full development kit for a 100 ml specification: one 120 ML bottle pack ₹1,062, one 50 ML pack ₹826 to compare against, 100 black reeds ₹800, Pure Performance 100 g ₹325 to qualify a carrier, two oils at 50 g — ₹212.40 and ₹354, and the ₹354 scale. ₹3,933.40, and every decision on this page gets tested.
Ask about the development kit
A millilitre you cannot buy a bottle for is a millilitre you cannot cost. Start with the glass.
— CandleMakingSuppliesIndia
Why trust this guide

CANDLEMAKINGSUPPLIESINDIA supplies raw materials, not finished diffusers. The first thing this page does is tell you a size we do not stock, because a 100 ml specification costed against a bottle that does not exist is worse than no specification. No oil here is recommended for throw or for heat behaviour, and no base is ranked against another, because how a reed diffuser performs is a property of your whole product in a particular room — vessel, fill, load, reed count, carrier, temperature, airflow — and no supplier can publish that figure on your behalf.

Every price, pack size, stock figure and stated specification here comes from live CSI stock in October 2026, checked per variant, and links to the product page where current pricing always takes precedence. Stated specifications are quoted only where a page publishes them — "Blend with 10-30% fragrance oil", the 70–75% base to 25–30% fragrance working ratio and the 24–48 hour rest on all five bases; 20.3 cm, "uniform pore structure — no swelling, no clogging, no splitting", "consistent diffusion from day 1 to day 30", "6-8 reeds for a standard 50-100ml bottle", "use 10+ for maximum throw in larger rooms — the base will evaporate faster at higher reed counts" and "avoid placing in direct sunlight or near heat sources which accelerate evaporation" on the fibre reeds; "slows evaporation" on Depth and "extended cold diffusion" on Longevity, which are page claims rather than measurements. Where a page states nothing — and no CSI base, oil, reed or bottle page states a volatility, a viscosity, an evaporation rate, a flash point used as a working temperature, a heat-stability figure, a storage temperature, a shelf life, a density, a reed diameter or a bottle neck diameter — we say so rather than filling the gap. Load windows are formulation guidance, not safety limits; documentation, including documentation certified or approved by IFRA, is available on request and is your own document to read. Compliance and labelling go to a qualified adviser in your market.

For vessel availability beyond the listed sizes, for quantities above the listed packs, for bulk rungs, GST invoicing or documentation, message us on WhatsApp at +91 7397976926.

Frequently asked questions

Does CSI sell a 100 ml reed diffuser bottle?
No. The reed diffuser bottle product lists exactly two variants, both available: 50 ML Pack of 10 at ₹826 and 120 ML Pack of 10 at ₹1,062. There is no 100 ml and no 200 ml reed bottle in the range. Build a 100 ml product by filling the 120 ml bottle to 100 ml, which costs ₹1.542 a millilitre in hardware with six reeds against ₹2.612 at 50 ml, and which puts you inside the published "6-8 reeds for a standard 50-100ml bottle" band. The page's body copy says "Size: 50 and 100ml" against its own 50 ML and 120 ML variants; that is a published inconsistency, and if a 100 ml vessel specifically matters, ask us on WhatsApp.
How much does a 100 ml reed diffuser cost to make?
At a 100 ml fill in the listed 120 ml bottle with eight black reeds and the published 25% working ratio: ₹164.85 of base (75 ml at ₹2.198/ml), ₹170.20 of hardware (₹106.20 glass + ₹64.00 reeds), plus the oil. With Eucalyptus Spearmint at its 100 g rung that is ₹88.50 and a unit of ₹423.55; with Vetiver ₹150.00 and ₹485.05; with Santal Noir ₹229.75 and ₹564.80. Drop to six reeds and the hardware falls to ₹154.20. On Longevity instead of a ₹1,099 base the liquid line rises ₹29.55.
How many reeds should a 100 ml reed diffuser have?
The only published guidance in the range is "6-8 reeds for a standard 50-100ml bottle", described as the optimal balance of throw and longevity — so a 100 ml fill is covered, at the top of that stated range. Black fibre reeds are ₹8.00 each at the 100-pack, so six is ₹48.00 and eight ₹64.00; white is ₹9.00, exactly ₹1.00 more. Which count you choose is a weighed comparison, because the reed page itself notes that "the base will evaporate faster at higher reed counts" — more reeds buy throw and consumption together. Build three units at 6, 7 and 8 and record grams per day alongside a fragrance-intensity score.
Is a 50 ml bottle cheaper than a 120 ml one?
Per bottle yes, per millilitre emphatically no. ₹82.60 against ₹106.20 means the 50 ml glass costs 77.8% of the 120 ml for 41.7% of the volume. Add six reeds to each and hardware per millilitre is ₹2.612 at 50 ml against ₹1.4183 at a full 120 ml — a factor of 1.84. That is why downsizing to improve a price point frequently destroys the margin it was meant to protect: the fixed cost does not shrink with the fill. If you need a small format, price it knowing that, rather than discovering it after the first production run.
Which fragrance oil gives the best throw with the least evaporation?
Nothing published answers that, and the question partly contains its own answer. Fragrance reaches the room because liquid travels up the reed and leaves an exposed surface, so throw and evaporation are the same transport read from two ends — you choose a position on the trade, you do not escape it. No CSI oil page publishes a volatility, an evaporation rate or a heat-stability figure, and nobody writing this page has smelled these oils. Qualify two or three candidates at the 50 g rung with vessel, fill, load, reeds and base all frozen, weigh them, score intensity at every weighing, and keep a cool-stored control of each for a coded blind comparison later.
Should I use a slower-evaporating base for a summer 100 ml product?
Only as a measured comparison, and with the trade in front of you. A slower-evaporating base is not automatically a better base: if it restricts wicking or fragrance release, the bottle lasts longer and smells of less, which is a worse product with a nicer-looking day-count. Two pages make claims in CSI's own words — Depth "slows evaporation" and Longevity offers "extended cold diffusion" — and claims cannot rank two bases numerically. Qualify any carrier on the ₹325 100 g pack first, then judge the swap on grams per day and fragrance intensity against a cool-stored control from the same batch.
Start with the glass, not the oil
₹1,888 buys both listed bottle sizes. Decide with twenty bottles in front of you, then blend.
Gold Reed Diffuser Bottle 50 ML pack of 10 ₹826 and 120 ML pack of 10 ₹1,062, with packs of 16 and 24 also listed · Fiber Diffuser Reeds (Black) ₹236 / 25, ₹400 / 50, ₹800 / 100, ₹4,000 / 500 · Fiber Diffuser Reeds (White) ₹265 / 25, ₹450 / 50, ₹900 / 100, ₹4,500 / 500 · Pure Performance Base 100 g ₹325 and 500 ml ₹1,099 · Depth, Lift and Softness Bases ₹1,099 / 500 ml · Longevity Base ₹1,296 / 500 ml · Eucalyptus Spearmint ₹68.44 / 15 gm, ₹212.40 / 50 gm, ₹354 / 100 gm, ₹1,652 / 500 gm, ₹3,068 / 1 kg · Vetiver ₹187.62 / 15 gm, ₹354 / 50 gm, ₹600 / 100 gm, ₹2,900 / 500 gm, ₹5,664 / 1 kg · Santal Noir ₹166 / 15 g, ₹499 / 50 g, ₹919 / 100 g, ₹4,599 / 500 g, ₹9,120 / 1 kg · Candle Making Weighing Scale ₹354. Message us for vessel availability, bulk rungs, GST invoicing and documentation.
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Editorial standards & sources
About this guide: Written by the CANDLEMAKINGSUPPLIESINDIA team. Product recommendations reflect the CSI range; the hardware-per-millilitre arithmetic, the four-route vessel comparison, the decision-locking order and the two-column test discipline apply to any supplier's materials.

Customer reviews: The ten reviews at the top of this page are genuine, published Judge.me reviews left by CSI customers on their product pages. Names, star ratings, dates and products are as recorded by Judge.me; wording is unedited. Most are observations from candle making rather than reed diffusers, because CSI's reed range is newer and its review history is thin.

Figures verified October 2026. Every temperature and every day-count a reader brings to this page is their own observation; none is supplied here. CSI lists no 100 ml and no 200 ml reed diffuser bottle; the listed variants are 50 ML Pack of 10 at ₹826 and 120 ML Pack of 10 at ₹1,062, both available as packs of 10 only, with 16 packs of 50 ml and 24 packs of 120 ml in stock, giving 160 and 240 bottles as the largest currently orderable quantities — a stock ceiling, not a listed pack size. Glass per bottle ₹826 ÷ 10 = ₹82.60 and ₹1,062 ÷ 10 = ₹106.20, so ₹82.60 ÷ ₹106.20 = 77.8% of the price for 50 ÷ 120 = 41.7% of the volume. Black fibre reeds ₹236 / 25 (₹9.44), ₹400 / 50, ₹800 / 100, ₹4,000 / 500 (₹8.00 from 50 up); white ₹265 / 25 (₹10.60), ₹450 / 50, ₹900 / 100, ₹4,500 / 500 (₹9.00 from 50 up); gaps ₹1.16 and ₹1.00. Hardware totals: ₹106.20 + ₹64.00 = ₹170.20, ₹106.20 + ₹48.00 = ₹154.20, ₹82.60 + ₹48.00 = ₹130.60, ₹82.60 + ₹64.00 = ₹146.60; per millilitre 170.20 ÷ 120 = ₹1.4183, 154.20 ÷ 100 = ₹1.542, 170.20 ÷ 100 = ₹1.702, 130.60 ÷ 50 = ₹2.612, 146.60 ÷ 50 = ₹2.932, and 106.20 ÷ 120 = ₹0.885 for glass alone plus ₹48.00 ÷ 120 = ₹0.40 giving ₹1.285 at a full fill with six reeds. Ratios against the ₹1.4183 floor: 1.09, 1.20, 1.84 and 2.07. At the pack-of-25 reed rate, eight reeds is ₹75.52 and hardware ₹181.72, or ₹1.5143 a millilitre. Blend arithmetic at a 100 ml fill: 10% is 90 ml + 10 g, 20% is 80 ml + 20 g, 25% is 75 ml + 25 g and the 30% maximum is 70 ml + 30 g; base at ₹1,099 ÷ 500 = ₹2.198/ml gives ₹197.82, ₹175.84, ₹164.85 and ₹153.86, and at Longevity's ₹1,296 ÷ 500 = ₹2.592/ml a 75 ml fill is ₹194.40, which is ₹29.55 dearer. Bottles per 500 ml base pack: 500 ÷ 90 = 5.56, ÷ 80 = 6.25, ÷ 75 = 6.67 and ÷ 70 = 7.14. Units including ₹170.20 of hardware and base but not oil: ₹368.02, ₹346.04, ₹335.05 and ₹324.06. Oil per gram: Eucalyptus Spearmint ₹68.44 ÷ 15 = ₹4.5627, ₹212.40 ÷ 50 = ₹4.248, ₹354 ÷ 100 = ₹3.54, ₹1,652 ÷ 500 = ₹3.304, ₹3,068 ÷ 1,000 = ₹3.068, with two 500 gm packs at ₹3,304 against the kilo at ₹3,068 so the kilo saves ₹236; Vetiver ₹187.62 ÷ 15 = ₹12.508, ₹354 ÷ 50 = ₹7.08, ₹600 ÷ 100 = ₹6.00, ₹2,900 ÷ 500 = ₹5.80, ₹5,664 ÷ 1,000 = ₹5.664, the 15 g to 50 g drop being (12.508 − 7.08) ÷ 12.508 = 43.4% and two 500 gm packs at ₹5,800 against the kilo at ₹5,664 so the kilo saves ₹136; Santal Noir ₹166 ÷ 15 = ₹11.0667, ₹499 ÷ 50 = ₹9.98, ₹919 ÷ 100 = ₹9.19, ₹4,599 ÷ 500 = ₹9.198, ₹9,120 ÷ 1,000 = ₹9.12, so its 500 g rate is marginally above its 100 g rate and the kilo saves ₹78 against two 500 g packs. Twenty-five grams of oil at the 100 g rung: ₹88.50, ₹150.00 and ₹229.75, giving units of ₹423.55, ₹485.05 and ₹564.80 on a ₹1,099 base at 25% with eight reeds. Development kit: ₹1,062 + ₹826 + ₹800 + ₹325 + ₹212.40 + ₹354 + ₹354 = ₹3,933.40; both bottle packs together ₹1,888. White reed premium on a 240-bottle run at six reeds: 240 × 6 × ₹1.00 = ₹1,440. Per-variant availability checked: both bottle variants available; all four black and all four white reed packs available; Pure Performance 100 g 63 units and 500 ML 56; Depth 982, Lift 66, Softness 98, Longevity 40; Eucalyptus Spearmint available at all five rungs with 28 units at 100 gm; Vetiver available at all five with 9 units at 100 gm, 3 at 500 gm and 5 at 1 kg; Santal Noir available at all five; Candle Making Weighing Scale ₹354 available. Stated specifications as published: all five bases "Blend with 10-30% fragrance oil", 70–75% base with 25–30% fragrance oil, rest 24–48 hours before bottling; fibre reeds 20.3 cm, "uniform pore structure — no swelling, no clogging, no splitting", "consistent diffusion from day 1 to day 30", "6-8 reeds for a standard 50-100ml bottle" described as the optimal balance of scent throw and longevity, "use 10+ for maximum throw in larger rooms — the base will evaporate faster at higher reed counts", and "avoid placing in direct sunlight or near heat sources which accelerate evaporation"; Depth "slows evaporation"; Longevity "extended cold diffusion". Those are page claims and qualitative statements, not measurements, and none ranks two products numerically. No CSI base, oil, reed or bottle page publishes a volatility, a viscosity, an evaporation rate, a flash point used as a working temperature, a heat-stability figure, a storage temperature, a shelf life, a density, a reed diameter, a pore size, a fibre count or a bottle neck diameter — so volume and mass figures above are not interconvertible, fills and loads are set by weight, bottle and reed geometry are the reader's own measurements, and no such figure is stated, estimated or implied for any CSI product. The bottle page's body copy says "Size: 50 and 100ml" against its own 50 ML and 120 ML variants; named as published and not resolved here. 1 kg is the largest listed oil pack and 500 ml the largest base pack, so larger quantities are a quote with no price guessed here. No accelerated-stability result is converted to real time anywhere on this page. Prices and availability change — the linked product pages are always authoritative.
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