How Do I Make a 100 ml Reed Diffuser Using Fragrance Oil and a Ready-Made Diffuser Base Without Using Alcohol?
शेयर करना
Do I need alcohol? No. A ready-made base is used as it comes with fragrance oil. CSI does not publish its bases' compositions, so ask for an SDS if you need to state "alcohol-free".
Why weigh instead of measuring ml? Base and oil do not necessarily weigh the same per ml, and neither density is published; 75 ml + 25 ml is only 25% by weight if they do.
What does one cost? About ₹424.50 in CSI materials at production rates, of which the liquid is ₹254.30. See the cost table.
The 100 ml recipe, by weight
Every CSI diffuser base page states the fragrance load as a share of the total blend, with a working range of 10% to 30% and a 24–48 hour rest before bottling. The Pure Performance Base page adds the clearest numbers: start at 10%, 20% recommended, a typical working blend of 75% base and 25% fragrance, a maximum of 30%, and the worked example "for a 100 ml finished diffuser at 25%: 75 ml base + 25 ml fragrance oil". That is everything you need to make a diffuser that works, provided you do one thing differently from the example: weigh instead of measuring volume. If you are still choosing a base, the base pillar compares all five; if you want to push the load, the load pillar shows how.
| Load (share of total blend) | Fragrance oil | Ready-made base | Total in the bottle | Where it comes from |
|---|---|---|---|---|
| 10% | 10 g | 90 g | 100 g | Page: "start at 10%" |
| 20% | 20 g | 80 g | 100 g | Page: "20% recommended" — this page's control |
| 25% | 25 g | 75 g | 100 g | Page: "typical working blend 75% base + 25% fragrance" |
| 30% | 30 g | 70 g | 100 g | Page: "up to a maximum of 30%" — and only if the oil's IFRA Category 10A limit allows |
The 100 g total assumes your finished blend weighs 1.00 g per ml — an example, because no density is published for any CSI base or oil. If your blend is 5% lighter or heavier, 100 ml of it weighs between 95 g and 105 g. That is why the recipe is written in grams of blend: decide the weight you want in the bottle, and the load maths stays exact whatever the density. To find your own density, weigh exactly 100 ml of your finished blend in a measuring vessel on the scale once and divide by 100. Accounting for density when filling 100 ml bottles from 1 kg of liquid goes further into that conversion, and the 120 ml weight calculation repeats it for a larger fill.
Why 100 ml in a 120 ml bottle? CSI's Gold bottle comes in 50 ml and 120 ml variants; there is no 100 ml variant, and the page does not publish a fill line. A 100 ml fill in the 120 ml bottle leaves headspace for the reeds to displace liquid and for the cap to close without a spill. If you sell "100 ml", fill 100 ml — and weigh it, because the bottle's shoulder is not a measuring device. If you prefer a fuller look, filling to a different volume is your decision; write it down and keep it constant.
What "without alcohol" means with a ready-made base
There are two different questions hidden in "without using alcohol", and the honest answer is different for each.
Do you need to add alcohol? No. A ready-made reed diffuser base is used as it comes: fragrance oil plus base, nothing else. CSI's base pages give a load range and a rest time; none of them asks you to add alcohol, water or any other solvent. Never add perfumer's alcohol, rubbing alcohol or water to "thin" or "clear" a blend. In particular, CSI's Isopropyl Alcohol Spray is sold for cleaning candle jars — it is not a diffuser solvent and should not go into a diffuser.
Is the base itself alcohol-free? We cannot tell you from the product page. CSI does not publish the composition of any of its diffuser bases — no page names DPG, Augeo, IPM, a glycol ether, alcohol, water content, viscosity, flash point or density. So we will not call any CSI base "alcohol-free", "DPG-based" or anything else. If your customers, your courier or your own labelling needs that answer, ask CSI on WhatsApp whether an SDS or technical data sheet is available for the base and read its composition and hazard sections yourself. We do not promise that one exists for every base.
Why do makers care? From general industry knowledge, perfumer's alcohol and other ethanol-based carriers are commonly described as evaporating fast and as highly flammable. That has consequences beyond smell: storage away from heat and flame, how a parcel may be classified for courier, labelling, and how quickly a diffuser empties. Non-alcohol carriers such as DPG or Augeo-type solvents are commonly described as slower and lower-odour, but CSI does not sell any of them and we give no figures for them. Augeo-type vs DPG vs alcohol-based formulas — a pillar of this series — sets out those general descriptions side by side, and using perfumer's alcohol as a base covers the flammability, packaging and performance considerations in full.
Why weigh: the volume trap in the page's own example
The Pure Performance example is written in millilitres because millilitres are easy to picture. But base and fragrance oil are different liquids, and different liquids commonly differ in density. Take two example densities — base 0.95 g/ml and oil 1.05 g/ml. Then 25 ml of oil weighs 26.25 g and 75 ml of base weighs 71.25 g, and the true load by weight is 26.25 g ÷ 97.50 g = 26.92%. Swap the example densities — base 1.05, oil 0.95 — and the same 75 + 25 ml gives 23.17%. Same recipe card, two different products.
| Example base density | Example oil density | 25 ml oil weighs | 75 ml base weighs | True load by weight |
|---|---|---|---|---|
| 1.00 g/ml | 1.00 g/ml | 25.00 g | 75.00 g | 25.00% |
| 0.95 g/ml | 1.05 g/ml | 26.25 g | 71.25 g | 26.92% |
| 1.05 g/ml | 0.95 g/ml | 23.75 g | 78.75 g | 23.17% |
A point or two of load may not sound like much, but it is the difference between a formula you can repeat and one that drifts every time you change oil. Measuring cylinders, pipettes and the volume marks on a silicone beaker are also less precise than a scale on small quantities, and viscous oils cling to the walls of whatever they were measured in. Formulating by weight rather than volume makes the full case for batch-to-batch consistency; this page simply does it.
The method, step by step
This is the full sequence for one 100 ml diffuser at 20%. It needs a scale, a clean beaker (the 250 ml silicone beaker holds a 100 g batch with room to stir), something to stir with, a small clear glass for the clarity sample, and the bottle and reeds. No heating: ready-made bases are mixed at room temperature, and there is no published reason to warm either liquid. Making reed diffusers without a heating machine lists the minimum equipment for small batches.
Two things on that list are commonly skipped, and both cost more than they save. The 24–48 hour rest is the base pages' own instruction; a blend bottled straight after stirring has not had time to show whether it will stay clear. And the clarity check is your only early warning: a hazy blend in a bottle is commonly described as clogging reeds and diffusing unevenly, and it looks wrong to a customer through clear glass.
The clarity hold: how you know the blend is compatible
Every CSI base page describes its base as crystal clear. A fragrance oil that dissolves fully in it should leave the blend clear. When it does not, you see one of four things, and each tells you something slightly different. The checkpoints below are a labelled working practice — there is no industry standard for diffuser clarity — but they catch the problems that show up slowly.
| Checkpoint | Look for | Pass | Fail — and the first fix |
|---|---|---|---|
| Straight after stirring | Streaks, swirls, cloudiness | One clear, even liquid | Stir longer; if still cloudy, too much oil for this base — remake 5 points lower |
| 24 hours | Haze against black card | No change | Haze developing = borderline; continue to 48 h before deciding |
| 48 hours (end of the pages' rest) | Layering, droplets, haze | Clear, single-phase | Do not bottle. Remake 5 points lower, or try the base the pages assign to that family |
| 7 days | Sediment, slow separation | Unchanged from 48 h | Treat as fail even if 48 h passed |
| After a cool night (example: a room left without heating, or a fridge door shelf for a few hours) | Haze that appears cold and clears warm | Stays clear | Borderline at that load; step down or test the base the page names for the family |
When a blend fails, the rule is to change the load or the base, never to add something. Water or alcohol is not a fix. The Longevity Base page puts it plainly for heavy oils: "if clouding occurs, reduce fragrance percentage and retest". A 5-point step down — 25% to 20%, 20% to 15% — is a reasonable first move. If the oil still clouds at a load you would be happy to sell, the next test is the CSI base whose page names that oil's family. Checking whether a 20% formula is compatible and preventing cloudiness after adding fragrance oil take this further, and deciding whether a cloudy formula is physically compatible covers diagnosis after the fact.
Bottle, reeds and placement
CSI sells fibre reeds in black and white, 20.3 cm long. The reed page's own guidance is: "for a standard 50–100 ml diffuser bottle, 6–8 reeds gives a good balance", with more reeds for stronger throw and faster diffusion and fewer for a subtler, longer-lasting result. That is the page's guidance, not a measured result, and reed diameter is not published. For a 100 ml fill this page starts at 8 — the top of the page's range — as the control, and tests 6 in one arm, so you can see what two fewer reeds do to grams lost per day in your room. Some CSI base pages mention rattan; CSI does not sell rattan reeds. How many fibre reeds to test in a 100 ml bottle covers reed count in depth.
Flipping — turning the reeds so the saturated ends go back into the liquid — is commonly used to refresh a diffuser. The Pure Performance page asks for one flip after the first hour; the Longevity page says to allow 2–3 hours before the first flip. After that, flip on a fixed schedule if you flip at all, and record it on the weighing sheet: each flip is commonly described as giving a short burst of scent and a small extra loss of liquid. If your diffuser only smells when flipped, that is a symptom worth investigating — throw only when the reeds are flipped covers it.
Place the diffuser away from direct sun, heaters and strong air currents — the Longevity page says the same about air currents for its base. Warmth and moving air are commonly described as speeding evaporation, which can feel like a stronger diffuser in week one and an empty bottle in week three. For testing, choose one room and leave the bottle in the same spot for the whole test.
A three-bottle test before you make twenty
If you are making a diffuser to sell, run one controlled round before you commit to a formula. The control is the recipe card's 20% with 8 reeds. Each test arm differs from the control in exactly one thing: arm B raises the load to 25%, arm C drops the reeds to 6. Arms A and C use the same 20% blend, so they come from one batch.
| Bottle | Load | Reeds | The one difference | Batch |
|---|---|---|---|---|
| A — control | 20% | 8 | None: the recipe card | 210 g at 20% = 42 g oil + 168 g base (fills A and C, 10 g kept as clarity sample) |
| B — load | 25% | 8 | Load 25% instead of 20% | 110 g at 25% = 27.50 g oil + 82.50 g base (10 g kept) |
| C — reeds | 20% | 6 | 6 reeds instead of 8 | From batch A |
| Total | 22 | 69.50 g oil + 250.50 g base |
Weigh each bottle with its reeds on day 0 (after the first flip), day 1, 3, 7, 14, 21 and 30, on the same scale in the same spot. Grams lost per day is the difference between two weighings divided by the days between them. Score the room blind on your own written scale. The example room here is 12 × 12 ft — 144 sq ft, 13.38 m² — with an example 10 ft ceiling, about 40.8 m³. There is no industry standard for how much diffuser a room needs; your room and your scale are the standard. Test one bottle at a time in the room, swapping on a fixed rota, or you will be scoring all three at once.
| Day | Bottle | Weight with reeds (g) | g lost since last | g/day | Room score (0–5) | Room °C | Reed photo / notes |
|---|---|---|---|---|---|---|---|
| 0 | A | ___ | — | — | ___ | ___ | flipped |
| 0 | B | ___ | — | — | ___ | ___ | flipped |
| 0 | C | ___ | — | — | ___ | ___ | flipped |
| 7 | A | ___ | ___ | ___ | ___ | ___ | |
| 7 | B | ___ | ___ | ___ | ___ | ___ | |
| 7 | C | ___ | ___ | ___ | ___ | ___ | |
| 14 | A | ___ | ___ | ___ | ___ | ___ | |
| 14 | B | ___ | ___ | ___ | ___ | ___ | |
| 14 | C | ___ | ___ | ___ | ___ | ___ | |
| 30 | A | ___ | ___ | ___ | ___ | ___ | |
| 30 | B | ___ | ___ | ___ | ___ | ___ | |
| 30 | C | ___ | ___ | ___ | ___ | ___ |
| If bottle A loses | Days to empty | Weeks |
|---|---|---|
| 1.0 g per day | 100.0 | 14.3 |
| 1.5 g per day | 66.7 | 9.5 |
| 2.0 g per day | 50.0 | 7.1 |
| 3.0 g per day | 33.3 | 4.8 |
CSI publishes no evaporation, throw or longevity data for any base, oil or reed, so those rows are not predictions; they turn your measurement into a number a customer understands. Read the three bottles together. If B scores clearly higher than A at a similar g/day, the extra oil is working. If B scores the same as A, 20% is enough and B was a waste of oil. If C loses noticeably fewer grams per day than A and still scores acceptably, you have bought weeks of life for nothing. The 30-day performance test turns this into a fuller protocol, and comparing 18%, 20% and 22% loads by cost per day adds the money.
The priced kit for the three-bottle round
Priced with listed, in-stock CSI sizes. The round needs 250.50 g of base, which raises the one interesting choice on this page: three 100 g packs or one 500 ml bottle. Three 100 g packs are 300 g for ₹975.00. The 500 ml bottle is ₹1,099.00, and at an example 1.00 g/ml it holds about 500 g — 475 g to 525 g at ±5%. For ₹124.00 more you get roughly two-thirds more base. If you intend to make more than these three bottles, the 500 ml is the better buy; if you only want the test, three 100 g packs are cheaper in cash.
| Item | Need | Buy | Price | Left over |
|---|---|---|---|---|
| Pure Performance Base — option A | 250.50 g | 3 × 100 g | ₹975.00 | 49.50 g |
| Pure Performance Base — option B | 250.50 g | 1 × 500 ml | ₹1,099.00 | about 249.50 g at 1.00 g/ml |
| Jasmine (example oil) | 69.50 g | 1 × 100 g | ₹430.00 | 30.50 g |
| Gold Reed Diffuser Bottle 120 ml | 3 bottles | 1 × pack of 10 | ₹1,062.00 | 7 bottles |
| Fiber Diffuser Reeds (Black) | 22 reeds | 1 × pack of 25 | ₹236.00 | 3 reeds |
| Materials, option A | ₹2,703.00 | |||
| Materials, option B | ₹2,827.00 | |||
| Weighing Scale + 250 ml beaker | once | 1 + 1 | ₹954.00 | — |
The jasmine line is the 100 g pack because the round needs 69.50 g; at ₹430.00 it is cheaper than 50 g + 15 g + 15 g. Ten bottles come in a pack, so seven are left for the production batch, and the reed pack leaves 3 reeds for replacements. If you already own a scale and a beaker, the tools line drops out.
What one 100 ml diffuser costs
Once the formula is settled, buy the base in 500 ml and the oil in the size your volume justifies. At production rates — jasmine at the 1 kg rate of ₹3.92/g, Pure Performance 500 ml at an example 1.00 g/ml, the ₹106.20 120 ml bottle and 8 black reeds at ₹8.00 each from the 50-pack — one 100 ml diffuser costs:
| Line | At 20% | At 25% | Note |
|---|---|---|---|
| Fragrance oil | 20 g = ₹78.46 | 25 g = ₹98.08 | Jasmine 1 kg rate; 15 g/100 g packs cost more per gram |
| Base | 80 g = ₹175.84 | 75 g = ₹164.85 | Pure Performance 500 ml at example 1.00 g/ml |
| Liquid | ₹254.30 | ₹262.93 | |
| Gold bottle 120 ml | ₹106.20 | ₹106.20 | Pack of 10 |
| 8 black fibre reeds | ₹64.00 | ₹64.00 | ₹8.00 each from the 50-pack |
| CSI materials per diffuser | ₹424.50 | ₹433.12 |
Three things stand out. First, the 5-point step from 20% to 25% costs ₹8.62 per bottle with jasmine — small, and worth paying only if bottle B in your test earned it. Second, density uncertainty moves the base line: at ±5% the 20% bottle's total sits between ₹416.13 and ₹433.75. Third, in the starter sizes — 100 g base, 100 g oil — the same 20% liquid costs ₹346.00 against ₹254.30 at production rates, which is why the first bottles always look expensive. The full cost of a 100 ml diffuser adds the packaging and labour lines, and pricing a 120 ml diffuser turns costs into a selling price.
For ordering: one 500 ml bottle of base makes about 6.25 diffusers of 100 g at 20% at the example density (6.67 at 25%), and a 1 kg pack of oil covers 50 diffusers at 20% or 40 at 25%. CSI lists bases only in 100 g (Pure Performance) and 500 ml; larger base quantities are quoted on WhatsApp, and no volume discount is published. Oil prices per gram rarely fall much above 100 g — the one reliable price step on CSI's catalogue is from 15 g to 50 g or 100 g. Base and oil for ten 100 ml bottles works a full batch order.
The first week: what is normal and what is not
Most first diffusers are judged — and abandoned — in their first week, usually on the wrong evidence. The table below separates what is commonly reported as normal behaviour from the signs that something in the formula, the reeds or the placement needs attention. None of it is a CSI measurement; it is general reed-diffuser practice, and every line points to a check you can make with the scale and your record sheet.
| What you notice | Commonly normal? | What to check | Where it is covered |
|---|---|---|---|
| Strong smell for the first hours after the flip, then softer | Yes — freshly soaked reed tips release most at first | Score on day 3 and 7, not day 0 | 7964 |
| You stop noticing it after a day at home | Yes — olfactory adaptation is commonly described | Score from fresh air, or use a second scorer | 7961 |
| Reeds darken from the bottom up within days | Often — liquid is travelling up the fibre | Photograph against white card at day 7 and 30 | 7968 |
| Liquid level barely moves in a week | Possible in a cool, still room | Is g/day above zero? Reed count, room temperature | 7966 |
| Level drops fast and the room still smells weak | Not what you want | g/day vs room score; warm spot or draught? | 7967 |
| Blend turns hazy in the bottle | No | Clarity sample — was it clear at 48 h and 7 days? | 7913 |
| Oily ring on the surface under the bottle | No — a drip or overfill | Wipe the neck after filling; check the cap seal | — |
The pattern is the same in every row: before you change the formula, look at the number. A diffuser that loses a steady number of grams a day and scores consistently on your scale is working, even if it no longer surprises you when you walk in. A diffuser whose weight does not move, or whose clarity sample has changed, has a real problem, and the post linked in that row is where to start.
The decision rule
Apply it from the top after round one and stop at the first line that is true.
| If this is true | It means | Do this |
|---|---|---|
| A clarity sample fails at 48 h or 7 days | Not compatible at that load in this base | Buy nothing yet. Remake 5 points lower; then test the base whose page names the family |
| All bottles score 0–1 from day 3 | Something limits release | Buy nothing yet. Check the room and reeds — the diagnosis hub |
| B (25%) clearly beats A, similar g/day | The extra oil earns its cost | Base 500 ml (₹1,099.00) + oil at your volume; formula 25% |
| A and B score alike | 20% is enough | Base 500 ml (₹1,099.00) + oil; formula 20% — saves ₹8.62 a bottle |
| C (6 reeds) scores like A with lower g/day | Fewer reeds, longer life | Standardise on 6 reeds; reed packs of 50 at ₹8.00 each |
| Strength fine, life short for your price | Consumption, not formula | Test reed count and placement before changing base — 7977 |
Notice that the rule never says "buy more oil" on the strength of a first impression, and never says "switch base" before a clarity failure or a measured problem. Most diffusers that disappoint in their first month are fixed with a load step, a reed count or a better placement, not with a new base. When a base change is justified, which reed diffuser base to buy and comparing two bases on evaporation, throw, clarity and cost show how to make it.
The CSI products in this method
| Size | Price | Per unit | Stock (14 Oct 2026) |
|---|---|---|---|
| 100 g | ₹325.00 | ₹3.25 per g | In stock |
| 500 ml | ₹1,099.00 | ₹2.20 per ml · ₹2.20 per g at an example 1.00 g/ml | In stock |
| CSI HyperDiffusion Base™ (different product) | ₹1,499.00 | — | Out of stock — not offered |
| Pack | Price | Per gram | Diffusers at 20.0 g oil |
|---|---|---|---|
| 15 g | ₹103.00 | ₹6.87 | 0.8 |
| 50 g | ₹230.00 | ₹4.60 | 2.5 |
| 100 g | ₹430.00 | ₹4.30 | 5.0 |
| 500 g | ₹1,961.00 | ₹3.92 | 25.0 |
| 1 kg | ₹3,923.00 | ₹3.92 | 50.0 |
| Variant | Price | Per bottle | Stock (14 Oct 2026) |
|---|---|---|---|
| 50 ml · pack of 10 | ₹826.00 | ₹82.60 | In stock |
| 120 ml · pack of 10 | ₹1,062.00 | ₹106.20 | In stock |
| Pack | Price | Per reed | Bottles covered |
|---|---|---|---|
| Pack of 25 | ₹236.00 | ₹9.44 | 3 bottles at 8 reeds |
| Pack of 50 | ₹400.00 | ₹8.00 | 6 bottles at 8 reeds |
| Pack of 100 | ₹800.00 | ₹8.00 | 12 bottles at 8 reeds |
| Pack of 500 | ₹4,000.00 | ₹8.00 | 62 bottles at 8 reeds |
| Item | Price | Note |
|---|---|---|
| Weighing Scale | ₹354.00 | Resolution not published — check the display steps |
| Silicon Measuring Beaker 250 ml | ₹600.00 | For batches above about 100 g |
| Silicon Measuring Beaker 100 ml | ₹300.00 | Mixing vessel; weigh, do not measure by its marks |
| CSI Pro Mixer (cordless handheld) | ₹349.00 | Optional; a clean glass rod or spoon also works |
Where to go from here
This page is the method pillar for the first section of the series. The section hub lists every question in it. If you are choosing a base, start at which reed diffuser base to buy in India. If the question is load, how much fragrance oil to add to 100 ml of base is the load pillar. If your diffuser is already made and disappointing, strong in the bottle but weak in the room is where diagnosis begins. And if you are turning this into a business, the business pillar carries the method through to wholesale buying.
CANDLEMAKINGSUPPLIESINDIA supplies raw materials, not finished diffusers. The easy answer is "our base is alcohol-free". This page says we cannot tell you that from the product page, tells you to ask for an SDS, shows that the base page's own volume example is not exact by weight, recommends three 100 g packs over our 500 ml when you only need a test, and says plainly that we publish no throw, evaporation or longevity data for any base, oil or reed.
Diffuser bases, fibre reeds, Gold bottles, beakers, scale and mixer are CSI live pricing, pulled 14 October 2026. Fragrance oils are CSI live pricing, pulled 24 September 2026, stock re-checked 14 October 2026. Every gram split, ml-to-g conversion, per-bottle cost and kit total on this page is computed and shown to two decimals so you can check it; densities are labelled examples, never CSI specifications.
Bottle counts per arm, clarity checkpoints, weighing schedules, room-scoring scales and loss allowances are labelled working practices, not industry standards — none exists for reed diffuser performance. The 1.00 g/ml blend density, the 0.95/1.05 g/ml illustration densities, the 100 ml fill, the 12 × 12 ft room, the 10 ft ceiling and the 0–5 scale are labelled examples you replace with your own measurements. For help building a test kit, bulk quotes, GST invoicing, MSDS or IFRA documents, message us on WhatsApp at +91 7397976926.
Frequently asked questions
- I Want to Start Making Reed Diffusers at Home in India — What Raw Materials Do I Need and Which Ready-Made Base Should I Buy First?
- How Much Reed Diffuser Base and Fragrance Oil Do I Need to Make 10 Bottles of 100 ml Each for a Small Business?
- How Do I Make a Reed Diffuser Using 20% Fragrance Oil and 80% Base, and How Do I Check Whether the Formula Is Compatible?
- What Is the Correct Method to Mix Reed Diffuser Base and Fragrance Oil so the Liquid Remains Clear and Uniform?
- How Do I Make a Reed Diffuser That Does Not Become Cloudy After Adding Fragrance Oil?
- Can I Make Reed Diffusers Without a Heating Machine, and What Equipment Is Actually Necessary for Small-Batch Production?
- What Is the Complete Process for Making 100 ml Reed Diffusers in India, from Selecting a Base and Fragrance Oil to Testing Reeds and Buying Raw Materials in Bulk?
- Which Reed Diffuser Base Should I Buy in India if I Want Strong Fragrance Diffusion and a Reasonable Product Life?
- What Is the Difference Between Augeo-Type Diffuser Bases, DPG and Alcohol-Based Formulas for Reed Diffusers?
- How Much Fragrance Oil Should I Add to 100 ml of Reed Diffuser Base if I Want a Strong-Smelling Finished Product?
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 pulled 14 October 2026 and 24 September 2026: 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; Lift Base ₹1,099.00 / 500 ml; Depth Base ₹1,099.00 / 500 ml; Softness Base ₹1,099.00 / 500 ml; CSI HyperDiffusion Base™ ₹1,499.00 (out of stock); Fiber Diffuser Reeds (Black) ₹236.00 / 25, ₹400.00 / 50, ₹800.00 / 100, ₹4,000.00 / 500; Fiber Diffuser Reeds (White) ₹265.00 / 25, ₹450.00 / 50, ₹900.00 / 100, ₹4,500.00 / 500 (both 20.3 cm long); Gold Reed Diffuser Bottle 50 ml ₹826.00 / pack of 10, 120 ml ₹1,062.00 / pack of 10; Weighing Scale ₹354.00; Silicon Measuring Beaker 100 ml ₹300.00, 250 ml ₹600.00; CSI Pro Mixer ₹349.00. Fragrance oils — CSI live pricing, pulled 24 September 2026, stock re-checked 14 October 2026: Jasmine Fragrance Oil ₹103.00 / 15 g, ₹230.00 / 50 g, ₹430.00 / 100 g, ₹1,961.00 / 500 g, ₹3,923.00 / 1 kg.
Non-price figures and assumptions: Fragrance load is a share of the total blend by weight (oil g = blend g × L; base g = blend g × (1 − L)). No density is published for any CSI base or oil: every ml-to-g conversion uses a labelled example density and shows ±5%; weigh 100 ml of your own blend to get yours. Recipe basis: 100 g of blend in a 120 ml Gold bottle (100 ml at an example 1.00 g/ml; 95 g–105 g at ±5%). Volume-trap illustration uses example densities 0.95/1.05 and 1.05/0.95 g/ml. Round 1: 210 g at 20% and 110 g at 25% with 10 g clarity samples; 8/8/6 reeds. Production cost uses Jasmine at the 1 kg rate, Pure Performance 500 ml at the example density, the 120 ml bottle at ₹106.20 and black reeds at ₹8.00. Pure Performance breakeven density 0.676 g/ml. Example room 12 × 12 ft (13.38 m²), 10 ft ceiling (40.8 m³). Stirring time, clarity checkpoints and the cool-night check are labelled working practice. Solvent descriptions (DPG, Augeo-type, perfumer's alcohol) are general industry knowledge; CSI sells none of them. What CSI's base pages state (quoted as claims to test, not CSI test results): every base is a "Professional … Reed & Car Diffuser Base", crystal clear per its page, used at 10–30% fragrance of the total blend with a 24–48 hour rest before bottling. Pure Performance — neutral, "no added fixatives, no complex enhancements", for all families, "start at 10% … up to a maximum of 30%", "20% recommended", a "typical working blend 75% base + 25% fragrance", the example "for a 100 ml finished diffuser at 25%: 75 ml base + 25 ml fragrance oil", and "flip reeds after the first hour". Longevity — oriental/amber, woody, resinous/balsamic, spicy and gourmand; "avoid light florals, fresh citrus, aquatics — use Lift Base"; slower "cold diffusion"; "if clouding occurs, reduce fragrance percentage and retest"; "allow 2–3 hours before the first flip". Lift — floral, citrus, green and fruity. Depth — chypre, leather, smoky and rich gourmand; "stabilises tricky sweet and spicy fragrance oils". Softness — soft florals, powdery/musky, light gourmand. Reed page — 20.3 cm long; "for a standard 50–100 ml diffuser bottle, 6–8 reeds gives a good balance". Bottle page — variants 50 ml and 120 ml (its text says "50 and 100ml"); neck diameter, fill line and any reducer are not stated. CSI publishes no composition, density, viscosity, evaporation rate, flash point or shelf life for any diffuser base; no throw, evaporation or longevity result for any base, oil or reed; no reed diameter; no bottle neck size or fill line; no IFRA percentage for any oil; and no bulk base price. The five bases are told apart only by what their pages say they are for — never by a measured result. IFRA: reed diffusers are listed under Category 10A in current IFRA amendments as commonly summarised in suppliers' guides; read the Category 10A limit on the certificate for your oil, which CSI provides on WhatsApp request. Material costs exclude labour, packaging, freight and GST. Diwali 2026 falls on Sunday 8 November.