How Do I Fix a Weak Reed Diffuser by Systematically Comparing Base Type, Fragrance Load, Fibre Reeds, Bottle Geometry and Environmental Conditions?
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What order should I test in? Environment, clarity, reeds, bottle, load, base — free and common before paid and rare. Base comes last because it re-opens everything.
Can I test several things at once? Yes, as separate arms against one shared control: five arms, two bottles each, one room. Never two changes in one arm.
What does it cost? ₹3,787.00 in new CSI materials for round one with your own base and oil (₹6,553.00 with everything bought). See the kit.
The method in one paragraph
Five things decide how a passive reed diffuser performs: the base that carries the oil, the fragrance load, the fibre reeds that lift and release it, the bottle that holds it, and the room it sits in. When a diffuser is weak, any of the five can be the cause, and they interact. The only reliable way to find which is to change them one at a time against a control bottle made from the same batch, measured the same way. That sounds slow. In practice it is faster than guessing, because guessing usually changes two things at once — a stronger load and more reeds, a new base and fresh reeds — and leaves you with a product you cannot explain or repeat.
This page is the capstone of the section "Weak throw, blocked reeds and poor performance". It puts every test in the section into one sequence, with a reason for the order: free stages before paid ones, gates before comparisons, cheap and common causes before expensive and rare ones. It prices a single parallel round that screens four levers against your product at once, and a 30-day confirmation for the winner. The example uses a reader's product — Pure Performance Base with Blue Ocean at 20%, 100 ml in a 120 ml Gold bottle, 7 black fibre reeds — and Blue Ocean is chosen deliberately: Longevity's page advises against aquatics and says to use Lift instead, which makes Lift the obvious base arm.
Two honest limits apply throughout. CSI publishes no throw, evaporation or longevity data for any base, oil or reed, so nothing on this page says that one CSI base or reed outperforms another; every comparison is yours to run. And CSI publishes no IFRA percentage for any oil: the oil's IFRA Category 10A limit — reed diffusers are listed under 10A, as commonly summarised in suppliers' IFRA guides — and the base page's 30% maximum both cap the load, and the lower one wins. Ask for the certificate on WhatsApp before any load arm.
| Lever | What it changes | Free first check | Paid test | Owned in depth by |
|---|---|---|---|---|
| Environment | How scent is carried and diluted; how fast liquid leaves | Small still room; outsider nose; thermometer | None | 7962, 7965, 7975, 7976 |
| Fibre reeds | Surface, delivery, clogging | Fresh reeds in the same bottle | Count and size arms | 7971, 7972, 7973, 7974 |
| Bottle geometry | Fill, liquid surface, climb height, neck share | Weigh your real fill | 50 ml vs 120 ml arm; open-neck bottle | 7976, 7977 |
| Fragrance load | Strength, clarity, residue | Clarity checks | 5-point load steps | 7945, 7946, 7948 |
| Base type | Carrier behaviour, oil pairing | Read the base page's family list | Second base at the same load | 7963, 7967, 7969 |
The eight stages, and why the order matters
The order is built on two rules. First, gates come before comparisons: if your measurement is unreliable, your room is draughty, or your liquid is cloudy, every comparison you run on top of it is noise. Second, within the comparisons, cheap and common causes come before expensive ones. Reeds cost a few rupees each and are the most common delivery problem. A base change re-opens every result you have — clarity, load, scent character, life — and costs a new 500 ml before you know whether it helps. So it comes last among the levers, not first.
| Stage | Question | Test that clears or convicts it | Cost | Depth |
|---|---|---|---|---|
| 0 — Define and measure | Is the complaint real, and how big? | Weigh with reeds in for a week; score blind on a written house scale; set a consumption budget | ₹0 | 7961, 7971 |
| 1 — Environment | Is the room the cause? | Same bottle in a small, still room for two days; outsider scores; min/max thermometer | ₹0 | 7962, 7965 |
| 2 — Clarity gate | Is the liquid single-phase? | White and black cards at 0 h, 48 h, 7 days and a cool night | ₹0 (+ vials) | 7978 |
| 3 — Fibre reeds | Are the reeds delivering? | Fresh reeds in the same liquid; then count; then size | Reeds | 7972, 7973, 7974 |
| 4 — Bottle geometry | Is the bottle shaping the result? | Real fill weighed; 50 ml vs 120 ml arm; no-reed open-neck bottle | Bottles | 7976, 7977 |
| 5 — Fragrance load | Is the liquid strong enough? | One 5-point step within the oil's 10A limit; clarity rechecked | Oil | 7946, 7947 |
| 6 — Base type | Does the oil suit its carrier? | Same oil and load in the base whose page names its family | 500 ml | 7964, 7967 |
| 7 — Confirmation | Does the fix hold for a month? | 30-day sheet: scent, life, reeds, clarity, room temperature | Bottles | 7979 |
Stages 0 to 2 are not optional. They are where most "weak diffusers" stop being weak: a nose that had adapted, a bottle under a ceiling fan, a living room four times the size of the room it was tested in, a liquid that had separated. The section hub walks the first checks in detail and explains why a bottle that smells strong at the cap can fail in the room — the cap is a small, still headspace; the room is a large, moving one.
Stages 0–2: measure, clear the room, pass the clarity gate
Stage 0 turns the complaint into numbers. Weigh your current bottle with its reeds in, cap off, at the same time each day for five to seven days, and work out grams lost per day from day 2. Set a consumption budget from the life you want to sell: fill weight ÷ target days. At an example density of 1.00 g/ml — weigh 100 ml of your own blend to get yours — a 100 ml fill is 100 g, so a 45-day life allows 2.22 g a day. Then score the room blind on a written scale. Two numbers, g/day against budget and room score against pass line, sort the complaint before anything is bought — which is the method of the eight-reed triage.
Stage 1 clears the room. Move the bottle into a small, still room for two days and score it there; ask someone who has not been in the room to score it; put a min/max thermometer beside it. If it passes in a small still room, the product works and the placement or room size is the issue — print placement guidance, do not reformulate. If it fails everywhere, carry on. Seasonal effects belong here too: a winter room that runs cool, or a summer room with a fan, changes the numbers without changing the product; the paired-room winter test and the summer loss split measure the swing.
Stage 2 is the gate. Hold the liquid against a white and a black card at mixing, after the base page's 24–48 hour rest, at 7 days and after a cool night. A blend with haze, layers, droplets or sediment has failed, and no reed, bottle or room test on it means anything. Never clear it by adding water or alcohol; step the load down by 5 points or move the oil to the base its family belongs to, and re-check. The ten-vial compatibility ladder runs this gate properly.
| Blend density | 120 ml bottle fill | Budget for 45 days | 50 ml bottle fill | Budget for 45 days |
|---|---|---|---|---|
| 0.95 g/ml | 95.0 g | 2.11 g/day | 42.8 g | 0.95 g/day |
| 1.00 g/ml (example) | 100.0 g | 2.22 g/day | 45.0 g | 1.00 g/day |
| 1.05 g/ml | 105.0 g | 2.33 g/day | 47.2 g | 1.05 g/day |
Stages 3–6 in one round: a five-arm parallel screen
If the gates are clear and the diffuser is still weak, run one round of five arms side by side, two bottles each, all from your own formula unless the arm changes it. Arm A is the control: your exact product, rebuilt with fresh reeds so old reeds do not handicap it. Each other arm changes one lever. Because they share one control and one room, you can read all four against A after fourteen days. Two bottles per arm is a labelled working practice for a screen; the confirmation round uses three.
| Arm | Lever | Base | Load | Reeds | Bottle and fill | Compared with |
|---|---|---|---|---|---|---|
| A | Control — your formula, fresh reeds | Pure Performance | 20% | 7 | 120 ml Gold, 100 g | — |
| B | Reeds — more reeds | Pure Performance | 20% | 10 | 120 ml Gold, 100 g | A |
| C | Bottle geometry — 50 ml Gold bottle | Pure Performance | 20% | 7 | 50 ml Gold, 45 g | A |
| D | Load — 25% | Pure Performance | 25% | 7 | 120 ml Gold, 100 g | A |
| E | Base — Lift (aquatic per Longevity's page) | Lift | 20% | 7 | 120 ml Gold, 100 g | A |
Arm B tests reeds: 10 instead of 7. Arm C tests bottle geometry: the same liquid and the same 7 reeds in a 50 ml Gold bottle filled to 45 g. That changes several things at once — less liquid, a different fill fraction (90% of the listed size against 83% in the 120 ml), and a different liquid height for the reeds to climb from — which is exactly the question "does the bottle matter?" asks; read its result per reed and against its own budget of 1.00 g/day, not against A's grams. Arm D tests load: one 5-point step, 20% to 25%, only if the oil's 10A limit allows it and the stage-2 gate passes at 25%. Arm E tests base: Lift Base, which Longevity's page names for aquatics, at the same load and reeds as A.
| Formula | Fill weight | Blue Ocean | Base | Base by volume |
|---|---|---|---|---|
| 20% at 0.95 g/ml | 95.0 g | 19.00 g | 76.00 g | 80.0 ml |
| 20% at 1.00 g/ml (example) | 100.0 g | 20.00 g | 80.00 g | 80.0 ml |
| 20% at 1.05 g/ml | 105.0 g | 21.00 g | 84.00 g | 80.0 ml |
| 25% at 1.00 g/ml | 100.0 g | 25.00 g | 75.00 g | 75.0 ml |
| 20%, 45 ml fill | 45.0 g | 9.00 g | 36.00 g | 36.0 ml |
| Bottle | Arm | g/day (2–14) | Budget g/day | Within? | Score d3 / d7 / d14 | Reed grade d14 | Clear d14? |
|---|---|---|---|---|---|---|---|
| A1 | A | ___ | 2.22 | Y / N | _ / _ / _ | ___ | Y / N |
| A2 | A | ___ | 2.22 | Y / N | _ / _ / _ | ___ | Y / N |
| B1 | B | ___ | 2.22 | Y / N | _ / _ / _ | ___ | Y / N |
| B2 | B | ___ | 2.22 | Y / N | _ / _ / _ | ___ | Y / N |
| C1 | C | ___ | 1.00 | Y / N | _ / _ / _ | ___ | Y / N |
| C2 | C | ___ | 1.00 | Y / N | _ / _ / _ | ___ | Y / N |
| D1 | D | ___ | 2.22 | Y / N | _ / _ / _ | ___ | Y / N |
| D2 | D | ___ | 2.22 | Y / N | _ / _ / _ | ___ | Y / N |
| E1 | E | ___ | 2.22 | Y / N | _ / _ / _ | ___ | Y / N |
| E2 | E | ___ | 2.22 | Y / N | _ / _ / _ | ___ | Y / N |
Reading the round: which lever moved the result
Every arm has to beat the control on room score without breaking its own consumption budget, keep its reeds no worse, and stay clear. A higher score bought with a g/day far above budget is not a fix: it is a shorter-lived product. Read each arm separately against A, then look across them.
| Result | Meaning | Carry into round 2 |
|---|---|---|
| B beats A and stays within budget | Delivery was limiting; more reeds help | 10 reeds vs A for 30 days |
| B empties faster, scores the same | Reeds move consumption, not scent here | Nothing from B; keep the lower count |
| C scores like A per reed and meets its own budget | The bottle size is not the issue | Nothing from C |
| C clearly worse per reed than A | Geometry matters for this liquid | Keep the 120 ml; consider fill height |
| D beats A, clear, within 10A | Strength in the liquid was limiting | 25% vs A for 30 days |
| E beats A | Base pairing for this oil | Lift vs A for 30 days |
| No arm beats A | Not reeds, bottle, load or base — revisit stage 1, then the oil | A second oil at the same load |
| Two arms beat A | Two levers help | Test the combination against A and each single winner |
Combinations deserve their own arm. If B and E both win, a bottle with ten reeds in Lift is a new product; it may be stronger, or it may empty in three weeks. Test it against A and against each single winner in round 2 rather than assuming the effects add. The three-week bottle shows how to split consumption into reed-driven and non-reed parts with three reed counts if consumption becomes the issue, and dark, sticky reeds and vanilla clogging faster than lemon cover reed residue that shows up at day 14.
Stage 7: the 30-day confirmation
Take the winning arm — or the winning combination — and run it against the control for thirty days, three bottles each plus one capped no-reed bottle that should not lose weight and checks the scale and caps. Record four things on one sheet: weight with reeds in (days 0, 1, 2, 3, 5, 7, 10, 14, 17, 21, 24, 28, 30), blind room score (days 3, 7, 14, 21, 30), reed photographs (days 0, 14, 30) and room min/max temperature daily, plus clarity on days 0, 7, 14 and 30. A fix passes only if all four lines pass. The 30-day test gives the full sheet, the reed-grade scale and the projection arithmetic.
Round 1 leaves 2 spare 120 ml bottles from its pack; round 2 needs 7, so one more pack of ten (₹1,062.00). Round 2 at 10 reeds needs 60 reeds; you will have 24 left from round 1, so add 1 × pack of 50 (₹400.00). Round 2 also needs about 315.0 g of liquid per arm (3 bottles of 100 g plus the 5% allowance) — 63.0 g of oil and 252.0 g of base at 20%. Round-1 leftovers cover part of that; price the rest from the pick cards below, in the winner's own base and load. These extra lines assume the winner is the 10-reed arm; scale them to whatever wins.
Do not print a life claim before day 30. Project life from the last two or three intervals — liquid left ÷ recent g/day — and say it is a projection. If the room temperature swung a lot during the month, print a seasonal range rather than one number, and repeat a shorter check in the opposite season. That is the honest version of "lasts up to X weeks".
What each lever costs per bottle
At production rates — Blue Ocean at ₹4.96 per g (1 kg), Pure Performance and Lift at ₹2.20 per g (both ₹1,099.00 per 500 ml, example density 1.00 g/ml), the 120 ml Gold bottle at ₹106.20 and the 50 ml at ₹82.60, black reeds at ₹8.00 each from fifty — each arm costs the following in materials. Labels, box, labour and freight are not included.
| Arm | Liquid | Bottle + reeds | Total per bottle | Change vs A | Per day over 45 days |
|---|---|---|---|---|---|
| A — Control | ₹274.96 | ₹162.20 | ₹437.16 | — | ₹9.71 |
| B — Reeds | ₹274.96 | ₹186.20 | ₹461.16 | +₹24.00 | ₹10.25 |
| C — Bottle geometry | ₹123.73 | ₹138.60 | ₹262.33 | −₹174.83 | ₹5.83 |
| D — Load | ₹288.75 | ₹162.20 | ₹450.95 | +₹13.79 | ₹10.02 |
| E — Base | ₹274.96 | ₹162.20 | ₹437.16 | +₹0.00 | ₹9.71 |
Three levers are cheap on the bottle: three more reeds add ₹24.00; a base swap to Lift costs nothing, because Lift and Pure Performance are the same price; a 5-point load step adds ₹13.79. The 50 ml bottle is cheaper per bottle but holds 45 g rather than 100 g, so compare it on cost per day of use, not per bottle. The real cost of any lever is hidden in life: a change that shortens life raises your customer's cost per day even when the bottle costs the same. The most economical fragrance percentage, the cost of a 100 ml diffuser and pricing a 120 ml diffuser at ₹799 take the money side into the business section.
The priced kits: round 1 and round 2
Round 1 uses your own Pure Performance and Blue Ocean for four of the five arms. CSI's new items are Lift for arm E, fresh black reeds for every bottle, one pack of 120 ml and one pack of 50 ml Gold bottles. Bases, reeds and bottles: CSI live pricing, pulled 14 October 2026. Oil: CSI live pricing, pulled 24 September 2026, stock re-checked 14 October 2026.
| Item | Need | Buy | Price | Skip if |
|---|---|---|---|---|
| Lift Base | 168.0 ml for arm E | 1 × 500 ml | ₹1,099.00 | — |
| black fibre reeds | 76 reeds | 1 × pack of 100 | ₹800.00 | — |
| 120 ml Gold bottles | 8 bottles | 1 × pack of 10 | ₹1,062.00 | You test in your own bottle (better) |
| 50 ml Gold bottles | 2 bottles for arm C | 1 × pack of 10 | ₹826.00 | Skip arm C if bottle size is fixed |
| Round 1, new CSI materials | ₹3,787.00 | |||
| Pure Performance Base | 569.1 g for arms A–D | 1 × 500 ml + 1 × 100 g | ₹1,424.00 | You hold it (usual case) |
| Blue Ocean | 197.4 g | 4 × 50 g | ₹988.00 | You hold it (usual case) |
| Weighing Scale | Every reading | 1 | ₹354.00 | You own a scale |
| Round 1, everything bought | ₹6,553.00 | |||
| Round 2 (30 days) — extra bottles, if the winner is arm B | 7 needed, 2 left over | 1 × pack of 10 | ₹1,062.00 | |
| Round 2 — extra reeds, if the winner is arm B | 60 needed at 10 reeds, 24 left over | 1 × pack of 50 | ₹400.00 |
Blue Ocean's per-gram price is essentially flat from 50 g to 1 kg (₹4.94 at 50 g, ₹4.96 at 1 kg), so 4 × 50 g for the test costs no more per gram than a kilo would. Pure Performance is the only CSI base also sold in a 100 g pack; for production the 500 ml is cheaper per gram for any base density above 0.676 g/ml. HyperDiffusion, the base CSI's page describes as its strongest-projection option, is out of stock and is not offered in any kit here.
The decision rule
Apply from the top, after each stage. Stop at the first line that is true.
| If this is true | It means | Do this |
|---|---|---|
| An outsider scores the room at your pass line | Nose adaptation | Buy nothing. |
| It passes in a small, still room | Room or placement | Buy nothing. Placement guidance; room-size note |
| The liquid fails the clarity gate | Compatibility | Step down the load or change base before any other test — 7978 |
| Fresh reeds alone restore it | Tired reeds | Black or white fibre reeds, from ₹8.00 each at 50; print a reed-change interval |
| Arm B wins within budget | Reed count | Reeds in production quantity |
| Arm D wins, clear, within 10A | Load | More of the same oil; confirm for 30 days |
| Arm E wins | Base pairing | Lift Base 500 ml for this SKU after round 2 |
| Nothing wins | The oil, for this room | A second oil at the same load before buying more of either |
Whatever the rule says, write the result into your product file: base, load, fill weight, reed count and type, bottle, the room and month of the test, and the four day-30 lines. That file is what turns one fixed diffuser into a repeatable product range. The quality-control checklist turns it into release checks, one base or several for five fragrances plans a range around it, and starting a reed diffuser business is the series pillar for the business side.
Find your exact symptom in this section
Every post in "Weak throw, blocked reeds and poor performance" is one stage of the method above, starting from a different symptom. Use this table to go straight to the one that matches yours.
| What you are seeing | Stage | Post |
|---|---|---|
| Strong at the cap, weak in the room | 0–1 | 7961 — section hub |
| 20% but cannot fill a 150 sq ft bedroom | 1 | 7962 |
| Reeds saturated, scent does not spread | 3, 6 | 7963 |
| Strong for three days, then weak | 3, 6 | 7964 |
| Fine in an AC bedroom, poor in a living room | 1 | 7965 |
| Liquid level barely changes in two weeks | 0, 3, 6 | 7966 |
| Liquid disappears quickly but room smells weak | 0, 6 | 7967 |
| Reeds dark and sticky after a month | 3 | 7968 |
| Vanilla clogs reeds faster than lemon | 3, 6 | 7969 |
| Fibre or rattan reeds? | 3 | 7970 |
| How many reeds in 100 ml? | 3 | 7971 |
| Eight reeds and still weak | 0, 3 | 7972 |
| Good throw only after flipping | 3 | 7973 |
| Works with thin reeds, not thick | 3 | 7974 |
| Weak in Indian winter | 1 | 7975 |
| Evaporates too fast in summer | 1, 4 | 7976 |
| 120 ml lasts only three weeks | 3, 4 | 7977 |
| Cloudy after mixing | 2 | 7978 |
| Testing over 30 days | 7 | 7979 |
The four other sections of the series pick up where a stage points. Making a reed diffuser that works owns the basic method; which base to buy owns stage 6 in depth; how much fragrance oil to add owns stage 5; starting a reed diffuser business owns the money. The pillars — how to make a 100 ml diffuser, ready-made base vs DPG vs Augeo-type vs alcohol and the business pillar — carry the commercial detail.
The CSI products in round 1
| Size | Price | Per unit | Bottles at 80.0 ml base |
|---|---|---|---|
| 500 ml | ₹1,099.00 | ₹2.20 per ml | 6.25 |
| Pack | Price | Per gram | Bottles at 20.0 g |
|---|---|---|---|
| 15 g | ₹93.22 | ₹6.21 | 0.75 |
| 50 g | ₹247.00 | ₹4.94 | 2.50 |
| 100 g | ₹495.00 | ₹4.95 | 5.00 |
| 500 g | ₹2,478.00 | ₹4.96 | 25.00 |
| 1 kg | ₹4,956.00 | ₹4.96 | 50.00 |
| Pack | Price | Per reed | Bottles at 7 reeds |
|---|---|---|---|
| Pack of 25 | ₹236.00 | ₹9.44 | 3.57 |
| Pack of 50 | ₹400.00 | ₹8.00 | 7.14 |
| Pack of 100 | ₹800.00 | ₹8.00 | 14.29 |
| Pack of 500 | ₹4,000.00 | ₹8.00 | 71.43 |
| Variant | Price | Per bottle | Neck / fill line |
|---|---|---|---|
| 50 ml, pack of 10 | ₹826.00 | ₹82.60 | Not published |
| 120 ml, pack of 10 | ₹1,062.00 | ₹106.20 | Not published |
CANDLEMAKINGSUPPLIESINDIA supplies raw materials, not finished diffusers. The easy answer for a supplier is to sell a new base or a stronger oil. This page makes the free stages compulsory, puts the base last among the levers, prices the round with your own base and oil, tells you when the answer is a pack of reeds or nothing, and says plainly that we publish no throw, evaporation or longevity data that would rank any base, oil or reed.
Diffuser bases, fibre reeds, Gold bottles and measuring tools 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 blend split, ml-to-gram conversion, per-bottle cost, cost per day and kit total on this page is computed and shown to two decimals so you can check it, and every density used is a labelled example with its ±5% sensitivity.
Bottle counts per arm, weighing schedules, rest and hold checkpoints, room-scoring scales and allowances are labelled working practices, not industry standards — none exists for reed-diffuser performance. The 100 ml and 45 ml fills, the 1.00 g/ml density, the 45-day target, the arm choices and the pass lines are labelled examples you replace with your own. For help building a test kit, bulk quotes, GST invoicing, MSDS or IFRA documents, message us on WhatsApp at +91 7397976926.
Frequently asked questions
- My Reed Diffuser Smells Strong When I Open the Bottle but Barely Fragrances the Room — Is the Problem the Base, Fragrance Oil or Reeds?
- My Reed Diffuser Has 20% Fragrance Oil but Cannot Fragrance a 150 sq ft Bedroom — What Should I Test Before Increasing Concentration?
- My Reed Diffuser Works Well in an Air-Conditioned Bedroom but Poorly in a Larger Living Room — How Should I Evaluate Room Size and Airflow?
- How Many Fibre Reeds Should I Test in a 100 ml Reed Diffuser Bottle Without Causing Excessively Fast Liquid Consumption?
- My Reed Diffuser Uses Eight Reeds but Smells Weak — Should I Increase the Number of Reeds or Investigate the Formula?
- My Reed Diffuser Produces Good Throw Only When I Flip the Reeds — Does That Suggest a Problem with Reed Compatibility or Fragrance Delivery?
- My 120 ml Reed Diffuser Lasts Only Three Weeks — How Do I Identify Whether the Base or Reed Configuration Is Causing Excessive Consumption?
- My Reed Diffuser Is Cloudy After Mixing Fragrance Oil with the Base — How Do I Determine Whether the Formula Is Physically Compatible?
- How Do I Test Reed Diffuser Performance Over 30 Days Using Liquid Weight Loss, Fragrance Intensity, Reed Condition and Room Temperature?
- Which Reed Diffuser Base Should I Buy in India if I Want Strong Fragrance Diffusion and a Reasonable Product Life?
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: Fragrance oils — CSI live pricing, pulled 24 September 2026, stock re-checked 14 October 2026: Blue Ocean Fragrance Oil ₹93.22 / 15 g, ₹247.00 / 50 g, ₹495.00 / 100 g, ₹2,478.00 / 500 g, ₹4,956.00 / 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; Lift Base ₹1,099.00 / 500 ml; Longevity Base ₹1,296.00 / 500 ml; 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; Gold Reed Diffuser Bottle 50 ml ₹826.00 / pack of 10, 120 ml ₹1,062.00 / pack of 10; Silicon Measuring Beaker 100 ml ₹300.00, 250 ml ₹600.00; Candle Making Weighing Scale ₹354.00; CSI Pro Mixer ₹349.00; CSI HyperDiffusion Base™ ₹1,499.00 (out of stock on the pull — not offered).
Non-price figures and assumptions: Load convention: fragrance load is a share of the total blend by weight (oil g = batch g × L; base g = batch g × (1 − L)). Example product: Pure Performance + Blue Ocean at 20%, 100 ml fill in the 120 ml Gold bottle and 45 ml in the 50 ml (labelled example fills; fill lines not published), example blend density 1.00 g/ml (±5% shown): 100 g and 45 g; at 20% = 20.0 g oil + 80.0 g base per 120 ml bottle; at 25% = 25.0 g oil + 75.0 g base. Working practices: 2 bottles per arm in round 1, 3 per arm plus a capped check bottle in round 2, 5% filling allowance, weighing with reeds in from day 0 with rates from day 2, blind scoring on a written house scale, 5-point load steps. Per-bottle costs use Blue Ocean's 1 kg rate, 500 ml base prices at the example density, ₹106.20 / ₹82.60 per 120 / 50 ml bottle and ₹8.00 per black reed. What CSI's product pages state (quoted as claims to test, not CSI test results): every reed & car diffuser base page gives a 10–30% fragrance range of the total blend and a 24–48 hour rest before bottling; Pure Performance adds "20% recommended", a "typical working blend 75% base + 25% fragrance" and "flip reeds after the first hour"; Longevity says to allow 2–3 hours before the first flip, to keep the bottle away from strong air currents, and that "heavy oils like oud can cloud at maximum load in some bases". The fibre-reed pages state a length of 20.3 cm and that "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 subtler, longer-lasting results. The Gold bottle's variants are 50 ml and 120 ml (its 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 SDS figure for any diffuser base; no throw, evaporation or longevity data for any base, oil or reed; no reed diameter; and no IFRA percentage for any oil — ask on WhatsApp for the oil's IFRA certificate and read its Category 10A limit (reed diffusers are listed under Category 10A as commonly summarised in suppliers' IFRA guides; confirm on the certificate). The lower of the base page's 30% and the oil's Category 10A limit always wins. CSI sells fibre reeds, not rattan, and does not sell DPG, Augeo, perfumer's alcohol, IPM, reducers or stoppers. Material costs exclude labour, labels, packaging, freight and GST. Diwali 2026 falls on Sunday 8 November.