My Reed Diffuser Has 25% Fragrance Oil but Barely Smells — Could the Base or Reeds Be Limiting Fragrance Release?

My Reed Diffuser Has 25% Fragrance Oil but Barely Smells — Could the Base or Reeds Be Limiting Fragrance Release?

 

White fibre reeds ₹9.00 each (50+) Pure Performance Base ₹325.00 / 100 g Longevity Base ₹1,296.00 / 500 ml
CSI reed diffuser guide · Fragrance oil percentages and formula calculations
Find out whether your reeds or your base are holding a 25% diffuser back — before you add a single gram more oil.
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Eco Candle Wicks
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Eco Candle Wicks
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Premium Candle Wicking Needle
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Premium Candle Wicking Needle
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Bamboo Wick Holder
Reviews collected and published through Judge.me on candlemakingsuppliesindia.store. They are general reviews of the wicks and wick tools named on each card, not assessments of the delivery diagnosis set out below. Wording is unedited.
Shop fibre reeds Send my reed photo
✓ Base, reed and bottle prices pulled 14 October 2026 ✓ Oil prices pulled 24 September 2026, stock re-checked 14 October ✓ GST invoicing · MSDS & IFRA documentation on request
Fragrance Load × Delivery
Twenty-five per cent is the Pure Performance page's typical working blend — the bottle has plenty of fragrance. If the room barely notices, the reeds or the base are not delivering it. Weigh the bottle, try fresh reeds, then test reed count and base side by side — not more oil.
25%
is already the "typical working blend" on CSI's Pure Performance page — the fix is delivery, not dose
Quick answers — read this first
Could the base or reeds be the problem? Yes — at 25% they are the likelier limit. The load is already at the page's typical blend; weak smell usually means the fragrance is not leaving the bottle.

What do I check first? Weigh the bottle a week apart and compare with a fresh one. Low weight loss = delivery problem (reeds, base, cold). Normal loss = room, airflow or nose.

Should I go to 30%? Not yet. If the reeds are clogged or the base is slow, extra oil stays in the bottle — and may clog reeds faster.

What does testing cost? ₹2,788.58 with your own current base and bottles (₹5,146.58 everything bought). See the priced round.
The short answer
Answer: Yes. At 25% — the Pure Performance page's typical blend — a diffuser that barely smells is usually limited by delivery: too few or clogged reeds, a slow base, or a cold room, rather than too little oil.
Why: Reeds lift the liquid and present it to the air; the base carries the oil and sets how readily it evaporates. Neither is helped by more oil.
Method: Weigh the weak bottle vs a fresh one; try fresh reeds; then 3 bottles each of 25% with 6 reeds, 10 reeds, and in a second base; weigh and score blind to day 30.
Shop: White fibre reeds · Pure Performance Base · Longevity Base · Sandalwood · help on WhatsApp.
In this guide
Weigh it first: what grams per day says about a weak 25% diffuser Two measurements, four situations · your figures, scored on your written house scale Grams lost per day, compared with a fresh control bottle → low high room score OK room score weak Slow but working A small-room or long-life product. Not your problem. Working Strength and use as expected. Not your problem. Delivery-limited Liquid is not leaving: reeds clogged or too few, slow base, cold room. Test reeds, then base. Leaving, but not reaching you Room, airflow, nose fatigue — or the carrier going faster than the fragrance. Test the room before the formula.
Weigh the weak bottle and a fresh one a week apart, then score both in your house room. Low weight loss with a weak score points at delivery — reeds, base, temperature. Normal weight loss with a weak score points at the room, airflow or nose fatigue. More oil fixes neither.
Section pillar
How much fragrance oil to add to 100 ml of base
First suspect
Fiber Diffuser Reeds (White) · ₹265.00 / 25
Troubleshooting hub
Strong in the bottle, weak in the room
Straight answer
My reed diffuser has 25% fragrance oil but barely smells — could the base or reeds be limiting fragrance release?
Yes — at 25% the base or the reeds are the likelier limit, not the amount of oil. Twenty-five per cent is the "typical working blend" on CSI's Pure Performance page, so your bottle carries plenty of fragrance; if the room barely notices it, the fragrance is not getting out. Weigh first: put the bottle on a scale, weigh again a week later, and compare its grams lost per day with a freshly made bottle. If it is losing much less, delivery is the problem — too few reeds, reeds clogged by heavy components, a base designed for slow diffusion, or a cold room. If it is losing about the same, the liquid is moving and the room, airflow or nose fatigue is the problem. Try fresh reeds in the old bottle before buying anything. Then test one blend three ways: your set-up, the same with more reeds, and the same in a second base. With Sandalwood at 25% in Longevity Base, 6 vs 10 reeds and Pure Performance Base, the round costs ₹2,788.58 with your own current base and bottles. Do not go to 30% first.
One line: At 25% the bottle has enough fragrance — weigh it, change reeds, test the base; add oil last, if ever.
At 25% the load is already at the Pure Performance page's "typical working blend" — so the base or the reeds are the likelier limit. Weigh the bottle first. Then test reeds and base, not more oil: Sandalwood at 25% in Longevity Base with 6 and 10 reeds against Pure Performance Base, nine 120 ml Gold bottles, ₹5,146.58 everything bought.
See fibre reeds

Yes — at 25%, look at the base and the reeds before the load

A 25% diffuser that barely smells is rarely short of fragrance. It is usually short of delivery.

Twenty-five per cent is the load CSI's Pure Performance Base page calls its "typical working blend" (75% base + 25% fragrance), five points above the 20% it recommends and five below the 30% maximum every CSI base page allows. At that level the liquid in your bottle carries plenty of fragrance. If the room still barely notices it, the fragrance is not getting out — and the two things that move it out are the reeds, which lift the liquid and present it to the air, and the base, which carries the oil up the reeds and sets how readily the blend evaporates. Adding another 4.50 g of oil to reach 30% in a 90 g fill does nothing for either.

So the honest answer to your question is: yes, the base or the reeds could well be limiting it — and one free measurement tells you which side to look at. Weigh the bottle. A diffuser that is losing very little weight is not delivering; a diffuser that is losing weight steadily but still reads weak is delivering something the room is not noticing. The diagram above sorts the four situations; the load arithmetic behind 25% is in the fragrance-load pillar.

The CSI principle
When the load is already high, the fix is delivery, not dose. Weigh the bottle before you buy anything.
Grams lost per day is the one number in this problem that does not depend on anyone's nose.

The free measurement: is liquid actually leaving?

Put the weak bottle — cap off, reeds in — on a scale and write down the weight. Do not move or flip anything. Weigh it again at the same time a week later, and again a week after that. The difference, divided by the days, is grams lost per day. Do the same for a freshly made bottle of the same formula with fresh reeds; that is your reference. CSI publishes no evaporation rate for any base, oil or reed, so the only comparison that means anything is your own fresh bottle beside your weak one.

EXAMPLE readings to show the arithmetic — replace every figure with your own
Turning two weighings into days of life
Reading Example Calculation Result
Bottle + cap + reeds, day 0 248.0 g
Same, day 14 241.0 g 248.0 − 241.0 7.0 g lost
Grams lost per day 7.0 ÷ 14 0.50 g/day
Empty bottle + cap + dry reeds (weighed before filling, or estimated from a spare) 160.0 g 241.0 − 160.0 81.0 g liquid left
Projected days remaining 81.0 ÷ 0.50 162 days

Read the result against the fresh reference bottle, not against a number from the internet — there is no standard grams-per-day for a reed diffuser. If the weak bottle loses much less than the fresh one, the problem is on the delivery side: reeds, base, or temperature. If it loses about the same, the liquid is moving and the problem is how the fragrance reaches people — room size, airflow, where it stands, nose fatigue, or a carrier that leaves faster than the fragrance does. Liquid level barely changes after two weeks and liquid disappears quickly but the room smells weak take each branch further.

The second free check: fresh reeds in the old bottle
Before buying any base, move the weak bottle's reeds to a saucer, put 6 new reeds in, flip once, and weigh again over a week. If the weight loss and the room score both rise, the old reeds were the bottleneck — commonly from heavy fragrance components and residue darkening and filling the reed channels over time. Six white reeds cost ₹63.60 at the 25-pack rate. Reeds dark and sticky after a month covers this pattern.

How reeds can limit a strong blend

CSI sells fibre reeds, 20.3 cm long, in black and white. Their page says that for a standard 50–100 ml bottle "6–8 reeds gives a good balance", with more reeds for stronger throw and faster diffusion and fewer for subtler, longer-lasting results. That is the page's guidance to test, not a measurement — but it describes the mechanism correctly: each reed is a separate path for the liquid to climb and a separate surface for fragrance to leave from. Too few reeds in a 120 ml bottle means less surface; old or clogged reeds mean less of each reed is working.

General reed mechanisms, phrased as commonly described — CSI publishes no reed performance data and no reed diameter
Four reed reasons a 25% blend can read weak
Reed reason What you see Single test
Too few reeds for the bottle Steady but low weight loss; faint at distance 6 vs 10 reeds, same blend (arms A and B)
Reeds clogged by heavy components Dark, sticky, crusted tips; weight loss falls over weeks Fresh reeds in the same bottle
Never flipped, or flipped too often Strong for an hour after flipping, then weak One flip at the start, then leave — see 7973
Reed type unsuited to the base Reeds stay pale and dry at the tips Compare black and white, or your own thin and thick reeds — see 7974

More reeds is not free strength. It is commonly described as increasing how fast the bottle empties, and a faster-emptying bottle is a shorter-lived product. That is why arm B below is measured on weight loss as well as room score: if ten reeds lift the score but also empty the bottle much faster, you have to decide whether the stronger, shorter product is the one you want to sell. How many reeds to test in a 100 ml bottle deals with that trade-off directly.

How the base can limit a strong blend

The base is the carrier the oil travels in. How easily the blend climbs the reeds and how readily it evaporates from them depends on the base as well as the oil — but CSI publishes no viscosity, evaporation rate or composition for any of its bases, so the base's effect can only be found by testing. What the pages do publish is what each base is for.

Our example is the case most likely to produce your symptom: Sandalwood — a heavy wood — at 25% in Longevity Base. The Longevity page describes its own diffusion as slower, "cold diffusion", for oriental, woody, resinous, spicy and gourmand families, and says to allow 2–3 hours before the first flip and to place it away from strong air currents. A slow, long-lasting base with a heavy oil is a coherent design — the page's own pitch is longevity — but in a large or ventilated room it may read as "barely smells". That is not a defect; it may simply be the wrong design for the room. Arm C puts the same blend in Pure Performance Base, whose page calls it neutral, for all families, with a flip after the first hour, so you can see what the base change alone does. We do not claim either will be stronger; we publish no throw data and never rank bases.

The common mistake: answering a delivery problem with more oil. A 25% diffuser reads weak, so the maker goes to 30%. If the reeds are clogged or the base is slow, the extra oil sits in the bottle — and heavy oils at high loads are commonly linked with faster reed clogging, so the next bottle is weaker still. Fix: weigh first, change reeds second, test the base third, and treat the load as already high enough. Going from 20% to 30% sets out when a load increase is justified.

The round: one blend, two reed counts, two bases

Three arms, nine bottles. Arm B changes only the reeds. Arm C changes only the base.
25% throughout · example fill 90 g per 120 ml bottle · white fibre reeds · one oil lot
Arms
Arm Bottles Base Reeds Oil / base Question
A — control S1–S3 Longevity (example of your current base) 6 22.50 g / 67.50 g Your weak set-up, made fresh
B — reeds S4–S6 Longevity 10 22.50 g / 67.50 g Do more reeds deliver more?
C — base S7–S9 Pure Performance 6 22.50 g / 67.50 g Does the base change delivery at the same load?
1
Weigh empty bottles with caps and dry reedsWrite the figure on the base of each. You need it to know how much liquid is left later.
2
Mix by weight and rest22.50 g oil + 67.50 g base per bottle. Rest 24–48 hours as every CSI base page asks. Check clarity against white and black cards.
3
Reeds in, flip by each page's guidance, then leaveLongevity arms: first flip after 2–3 hours, as its page says. Pure Performance arm: flip after the first hour, as its page says. One flip each, then hands off. Weigh: day 0.
4
Weigh on day 3, 7, 14 and 30Same time of day, same order. Record room temperature: warmer rooms are commonly described as increasing evaporation, so a hot week can lift every bottle at once.
5
Score blind, one bottle at a timeIn your house room — door shut, fan off, fixed distances, evaluators from fresh air, coded bottles. Day 7, 14 and 30.
6
Photograph reeds at day 30Tip colour and stickiness in arms A and C tell you whether the base affects how the reeds age.
Your figures · example 0–5 house scale (not an industry standard)
Record sheet
Bottle Arm (coded) Tare (g) Day 0 (g) Day 14 (g) Day 30 (g) g/day Score d7 Score d30 Reeds d30
S1 ___ ___ ___ ___ ___ ___ ___ ___ ___
S2 ___ ___ ___ ___ ___ ___ ___ ___ ___
S3 ___ ___ ___ ___ ___ ___ ___ ___ ___
S4 ___ ___ ___ ___ ___ ___ ___ ___ ___
S5 ___ ___ ___ ___ ___ ___ ___ ___ ___
S6 ___ ___ ___ ___ ___ ___ ___ ___ ___
S7 ___ ___ ___ ___ ___ ___ ___ ___ ___
S8 ___ ___ ___ ___ ___ ___ ___ ___ ___
S9 ___ ___ ___ ___ ___ ___ ___ ___ ___

What a delivery fix costs — per bottle and per day

Neither fix changes the liquid cost much: the blend is the same in all three arms, and Pure Performance Base costs ₹1,099.00 for 500 ml against ₹1,296.00 for Longevity Base. At Sandalwood's 1 kg rate (₹5.03 per gram) and Longevity at an example 1.00 g/ml (₹2.59 per gram), the liquid in a 90 g fill costs ₹288.06. The reeds add ₹54.00 for six white reeds or ₹90.00 for ten at the 50-pack rate. What changes the economics is the life of the bottle.

ILLUSTRATION ONLY — the g/day figures are hypotheticals to show the arithmetic; your weighed figures replace them
Why more reeds can mean a shorter, dearer-per-day product
Reeds Hypothetical g/day Days of life Liquid cost per day Reeds per bottle
6 1.0 90 ₹3.20 ₹54.00
10 1.6 56 ₹5.12 ₹90.00

If ten reeds made the room score jump and the bottle emptied 60% faster, as in this illustration, you would have a stronger product that lasts noticeably less time. Neither is wrong; they are different products. A bedroom diffuser sold on longevity and a living-room diffuser sold on presence can be the same blend with different reed counts and different labels. Strong for three days, then weak and 120 ml lasting only three weeks look at the life side of this trade-off.

The priced round

9 bottles · bases, reeds, bottles CSI live pricing, pulled 14 October 2026 · oil CSI live pricing, pulled 24 September 2026, stock re-checked 14 October 2026 · 3% transfer-loss allowance · bases sized at 0.95 g/ml
25% control · 10 reeds · Pure Performance
Item Need Buy Price Skip if
Sandalwood (example oil) 208.58 g 2 × 100 g + 1 × 15 g ₹1,098.58 You have enough of your own oil (better)
Pure Performance Base (arm C) 208.58 g 3 × 100 g ₹975.00 Your comparison base is another one
Fiber Diffuser Reeds (White) 66 reeds 1 × pack of 50 + 1 × pack of 25 ₹715.00 You hold fresh reeds from one lot
With your own current base and bottles ₹2,788.58
Longevity Base (arms A and B) 417.15 g 1 × 500 ml ₹1,296.00 You hold your current base (usual)
Gold Reed Diffuser Bottle 120 ml 9 bottles 1 × pack of 10 ₹1,062.00 You use your own bottles
Everything bought ₹5,146.58

Three 100 g packs of Pure Performance (₹975.00) cover arm C more cheaply than a 500 ml (₹1,099.00) because the arm needs only 209 g. The 100 g size is unique to Pure Performance among CSI's bases. Sandalwood is ₹5.03 per gram at 100 g and ₹5.03 at 1 kg — the same rate — so buy production quantities after the round.

Argued against our own interest, plainly. The obvious sale here is more oil — and at 25%, more oil is the least likely fix. If fresh reeds in your existing bottle solve it, your total spend is ₹265.00 for a pack of 25 reeds. Do the weighing and the fresh-reed check before the round, and buy the round only if both leave the question open.
Selling diffusers for Diwali (Sunday 8 November 2026)? If your festive stock reads weak at 25%, a reed change is the fix you can make in days; a base change needs a 24–48 hour rest and at least a day-7 read. Message us with your bottle size, reed count and a photo of the reeds and we will help you decide what to test first.
Send my reed photo

The decision rule

Apply after weighing and the day-30 read · stop at the first line that is true
Base, reeds, or neither
If this is true It means Do this
Weak bottle loses about as much as a fresh one Liquid is moving — the room, airflow or nose Buy nothing. Re-score in a closed room; see the room post
Fresh reeds in the old bottle fix it Reed condition was the limit Plan reed replacement; buy reeds only
Arm B beats A on score, weight loss rises moderately Reed count was the limit Sell with 10 reeds; reeds in packs of 50 or more
Arm C beats A at the same reed count The base was the limit for this room Move this oil to that base in 500 ml
B and C both beat A Both help Round 2: Pure Performance with 10 reeds
No arm beats A Not reeds or base — the oil or the room size Don't buy yet. See the capstone

If nothing moves the score, the remaining suspects are the oil itself — some oils may simply suit candles or sprays better than passive diffusion — and the room, which may be larger or more ventilated than a passive diffuser can fill. 20% but cannot fragrance a 150 sq ft bedroom, the same oil for candles and diffusers? and the systematic weak-diffuser capstone cover those last steps.

At twenty-five per cent the bottle has enough fragrance. Find out why it is not leaving.
— CandleMakingSuppliesIndia

The CSI products in this round

1
The first suspect · 6 vs 10 reeds
Fiber Diffuser Reeds (White)
Fibre reeds, 20.3 cm; CSI sells fibre, not rattan. The page says 6–8 suit a 50–100 ml bottle, more for stronger, faster diffusion, fewer for subtler and longer-lasting — guidance to test. Diameter not published. White ₹9.00 each from the 50-pack. (The white listing's text calls them "black fiber reeds" — a page inconsistency.)
Pack Price Per reed Bottles at 6 reeds
Pack of 25 ₹265.00 ₹10.60 4
Pack of 50 ₹450.00 ₹9.00 8
Pack of 100 ₹900.00 ₹9.00 16
Pack of 500 ₹4,500.00 ₹9.00 83
₹715.00 for 1 × pack of 50 + 1 × pack of 25 Buy white fibre reeds
2
Arm C · the comparison base
Pure Performance Base
CSI's product page calls it neutral, "no added fixatives, no complex enhancements", for all fragrance families, 20% recommended, 25% typical, 30% maximum, flip after the first hour. The only CSI base sold in 100 g, which makes a one-arm comparison cheaper.
Size Price Per unit Bottles at 67.5 g base (example 1.00 g/ml)
100 g ₹325.00 ₹3.25 per g 1.48
500 ml ₹1,099.00 ₹2.20 per ml 7.41
₹975.00 as 3 × 100 g Buy Pure Performance Base
3
Example current base · arms A and B
Longevity Base
CSI's product page describes slower "cold diffusion" for oriental/amber, woody, resinous, spicy and gourmand families, 10–30%, rest 24–48 hours, 2–3 hours before the first flip, and placement away from strong air currents. Claims to test; composition not published.
Size Price Per unit Bottles at 67.5 g base (example 1.00 g/ml)
500 ml ₹1,296.00 ₹2.59 per ml 7.41
₹1,296.00 if you need fresh base Buy Longevity Base
4
Example oil · 22.50 g per bottle at 25%
Sandalwood Fragrance Oil
A heavy wood, the family the Longevity page names. Its 15 g, 50 g and 100 g sizes are back in stock as of 14 October 2026. CSI publishes no diffuser strength or IFRA percentage for any oil — ask for the certificate on WhatsApp.
Pack Price Per gram Bottles at 22.5 g oil
15 g ₹93.22 ₹6.21 0.67
50 g ₹271.40 ₹5.43 2.22
100 g ₹502.68 ₹5.03 4.44
500 g ₹2,513.40 ₹5.03 22.22
1 kg ₹5,026.80 ₹5.03 44.44
₹1,098.58 for 2 × 100 g + 1 × 15 g Buy Sandalwood
Black reeds, or another bottle? The round is the same; only the counts and grams change. Reeds and bottles: black fibre reeds (₹8.00 each from 50) and Gold Reed Diffuser Bottles. Bases: Reed & Car Diffuser Base.
Why trust this guide

CANDLEMAKINGSUPPLIESINDIA supplies raw materials, not finished diffusers. The easy sale for a fragrance supplier is "add more oil". This page tells you that at 25% more oil is the least likely fix, that a pack of reeds may solve it, and that we publish no evaporation, viscosity, throw or reed-diameter data for any CSI base, oil or reed.

Diffuser base, reed, bottle and tool prices are CSI live pricing, pulled 14 October 2026. Oil prices are CSI live pricing, pulled 24 September 2026, stock re-checked 14 October 2026. Every gram split, density conversion, pack rounding, kit total and cost per bottle on this page is computed and shown to two decimals so you can check it.

Bottle counts per arm, fill weights, clarity checkpoints, the weighing schedule, the room protocol and scoring scales are labelled working practices, not industry standards — none exists for reed-diffuser strength. The 90 g fill, the example weighings (248 g, 241 g, 160 g), the 1.0 and 1.6 g/day hypotheticals and the 0–5 scale are labelled examples you replace. For help building a test kit, bulk quotes, GST invoicing, MSDS or an oil's IFRA certificate, message us on WhatsApp at +91 7397976926.

Frequently asked questions

Why does my reed diffuser not smell even with a lot of fragrance oil?
At high loads, weak smell usually means poor delivery: too few or clogged reeds, a base designed for slow diffusion, a cold room, or airflow carrying the fragrance away. Weigh the bottle over a week to see whether liquid is leaving.
How do I know if my diffuser reeds are clogged?
Clogged reeds often look dark, sticky or crusted at the tips, and the bottle's weight loss falls over the weeks. Put fresh reeds in the same bottle and weigh again; if loss and smell rise, the old reeds were the limit.
Does the diffuser base affect how strong it smells?
It can. The base carries the oil up the reeds and affects how readily the blend evaporates. CSI's base pages describe different diffusion profiles — Longevity calls its own "cold diffusion" — but publish no measurements, so test bases side by side.
Will more reeds make my diffuser stronger?
CSI's reed page says more reeds give stronger throw and faster diffusion. Faster diffusion also empties the bottle sooner, so weigh bottles to see what more reeds cost you in product life.
How often should I flip reed diffuser reeds?
Follow the base page: Pure Performance says after the first hour; Longevity says allow 2–3 hours before the first flip. After that, flipping briefly boosts scent but uses liquid faster; for testing, flip once and leave.
Is 25% fragrance oil enough for a reed diffuser?
It is the typical working blend on CSI's Pure Performance page and within every CSI base's 10–30% range. If 25% reads weak, investigate reeds, base, room and the oil before going higher.
Delivery before dose
Weigh it. Fresh reeds. Then reeds and base side by side.
White fibre reeds from ₹265.00 for 25, black from ₹236.00; Pure Performance from ₹325.00 for 100 g; Longevity ₹1,296.00 for 500 ml; Gold Reed Diffuser Bottles ₹1,062.00 for ten 120 ml. Send us a photo of your reeds and your weighings and we will help you read them.
Shop fibre reeds Send my weighings
Continue the read — Fragrance oil percentages and formula calculations
Editorial standards & sources
About this guide: Written by the CANDLEMAKINGSUPPLIESINDIA team. The weigh-first method, reed and base checks, round design and decision rule apply to any base, oil and reed; the products named are CSI's.

Customer reviews: The six reviews at the top of this page are genuine, published Judge.me reviews left by CSI customers on the product pages named on each card — Eco Candle Wicks, Premium Candle Wicking Needle and Bamboo Wick Holder. They are general product reviews, not assessments of the guidance set out here. Names, star ratings, dates and products are as recorded by Judge.me and wording is unedited. "Verified buyer" appears only on the three reviews Judge.me recorded as verified — Monika Deep, Subhankar Roy and Sneha Tamang; the reviews from Ashwini, LJ and Lalitha Jagan are published but not recorded as verified, and carry no badge.

Figures used on this page: Oils — CSI live pricing, pulled 24 September 2026, stock re-checked 14 October 2026: Sandalwood Fragrance Oil ₹93.22 / 15 g, ₹271.40 / 50 g, ₹502.68 / 100 g, ₹2,513.40 / 500 g, ₹5,026.80 / 1 kg. Diffuser bases, reeds, bottles and tools — CSI live pricing, pulled 14 October 2026: Pure Performance Base ₹325.00 / 100 g, ₹1,099.00 / 500 ml; Longevity Base ₹1,296.00 / 500 ml; Fiber Diffuser Reeds (White) ₹265.00 / 25, ₹450.00 / 50, ₹900.00 / 100, ₹4,500.00 / 500; Gold Reed Diffuser Bottle 50 ml ₹826.00 / pack of 10, 120 ml ₹1,062.00 / pack of 10.

Non-price figures and assumptions: Load convention: fragrance load is a share of the TOTAL blend (oil g = batch g × L; base g = batch g × (1 − L)); to hit a true load on a fixed amount of base, oil = base × L ÷ (1 − L). Every ml ↔ g conversion uses a labelled example density with a ±5% sensitivity — weigh 100 ml of your own blend to get yours. Example fill 90 g per 120 ml bottle at 25%; example density 1.00 g/ml with a 0.95–1.05 band, bases sized at 0.95 g/ml; 6 and 10 reeds per bottle; 3 bottles per arm; 3% transfer loss; example weighings 248.0 g → 241.0 g over 14 days with a 160.0 g tare; hypothetical 1.0 and 1.6 g/day for the cost-per-day illustration; weighing on day 0, 3, 7, 14, 30; example 0–5 house scale. Costs use the Sandalwood 1 kg rate, Longevity 500 ml and white reeds at the 50-pack rate. What CSI's base pages state (quoted as claims to test, not CSI measurements): Pure Performance — neutral, "no added fixatives, no complex enhancements", for all fragrance families, "start at 10% … up to a maximum of 30%", "20% recommended", a "typical working blend" of 75% base + 25% fragrance, rest 24–48 hours before bottling, and "flip reeds after the first hour"; Longevity — for oriental/amber, woody, resinous/balsamic, spicy and gourmand families, slower "cold diffusion", 10–30%, rest 24–48 hours, "if clouding occurs, reduce fragrance percentage and retest", allow 2–3 hours before the first flip; Lift — floral, citrus, green and fruity families, 10–30%, rest 24–48 hours; Depth — chypre, leather, smoky and rich gourmand families, "stabilises tricky sweet and spicy fragrance oils", 10–30%, rest 24–48 hours; Softness — soft florals, powdery/musky and light gourmand, 10–30%, rest 24–48 hours. Fibre reed page: length 20.3 cm; for a standard 50–100 ml bottle "6–8 reeds gives a good balance". Gold Reed Diffuser Bottle: variants 50 ml and 120 ml (the page text also says "50 and 100ml"); neck diameter and fill line are not published. CSI publishes no composition, density, viscosity, evaporation rate, flash point or shelf life for any diffuser base; no throw, evaporation or longevity data for any base, oil or reed; no reed diameter; no IFRA percentage for any oil; and no industry standard exists for an "acceptable" diffuser strength — every acceptance line on this page is the reader's labelled house standard. CSI does not sell DPG, Augeo, perfumer's alcohol, IPM or rattan reeds; CSI HyperDiffusion Base was out of stock on 14 October 2026. Costs exclude labour, labels, boxes, freight and GST. Diwali 2026 falls on Sunday 8 November.
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