How Do I Compare 18%, 20% and 22% Fragrance Loads Using Room Throw, Liquid Consumption and Cost per Day of Use?

How Do I Compare 18%, 20% and 22% Fragrance Loads Using Room Throw, Liquid Consumption and Cost per Day of Use?

 

Pure Performance ₹1,099.00 / 500 ml Blue Ocean ₹93.22 / 15 g Gold 50 ml ₹826.00 / 10
CSI reed diffuser guide · Fragrance oil percentages and formula calculations
Pick between 18%, 20% and 22% with a blind room score, a scale and the cost of each day — not with your nose at the bottle.
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"Quality of the wick is good for jar candles, team can work on the pricing and delivery timelines."
Monika DeepVerified buyer · Oct 2025
Eco Candle Wicks
★★★★★
"Quality wick, works very well"
AshwiniSep 2025
Eco Candle Wicks
★★★★☆
"Good quality .... if possible delivery date would be try little bit quick please"
Subhankar RoyVerified buyer · Sep 2024
Eco Candle Wicks
★★★★★
"This needle is very helpful as it doesn't damage the mould and there is no leakage of wax while pouring.. I would definitely recommend this .."
LJAug 2024
Premium Candle Wicking Needle
★★★★★
"Good one"
Sneha TamangVerified buyer · Apr 2025
Premium Candle Wicking Needle
★★★★★
"This bamboo wick holder doesn't exert any pressure on the wicks… and it is a very useful product 👌🏻👌🏻.."
Lalitha JaganAug 2024
Bamboo Wick Holder
★★★★☆
"Quality of the wick is good for jar candles, team can work on the pricing and delivery timelines."
Monika DeepVerified buyer · Oct 2025
Eco Candle Wicks
★★★★★
"Quality wick, works very well"
AshwiniSep 2025
Eco Candle Wicks
★★★★☆
"Good quality .... if possible delivery date would be try little bit quick please"
Subhankar RoyVerified buyer · Sep 2024
Eco Candle Wicks
★★★★★
"This needle is very helpful as it doesn't damage the mould and there is no leakage of wax while pouring.. I would definitely recommend this .."
LJAug 2024
Premium Candle Wicking Needle
★★★★★
"Good one"
Sneha TamangVerified buyer · Apr 2025
Premium Candle Wicking Needle
★★★★★
"This bamboo wick holder doesn't exert any pressure on the wicks… and it is a very useful product 👌🏻👌🏻.."
Lalitha JaganAug 2024
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 load-comparison method set out below. Wording is unedited.
Shop reed diffuser bases Plan my comparison on WhatsApp
✓ Diffuser prices pulled 14 October 2026 ✓ Oil stock re-checked 14 October 2026 ✓ GST invoicing · MSDS & IFRA documents on request
Reed Diffusers × Formula Calculations · Load comparison
Every gram a 22% bottle loses costs ₹0.11 more than a gram of the 18% blend. It is the better product only if the room scores it higher, or it loses at least 3.9% less liquid a day. This page gives you the exact cost side and the twelve-bottle test that measures the rest.
₹2.69 · ₹2.75 · ₹2.80
blend cost per gram at 18%, 20% and 22% — Pure Performance 500 ml at an example 1.00 g/ml + Blue Ocean at the 100 g rate · cost per day = this × your measured g/day · CSI live pricing, October 2026
Quick answers — read this first
How do I compare loads fairly? One base, oil, bottle, fill weight, reed count and room; three reeded bottles and one capped bottle per load; 20% as the control; weigh daily, score blind.

What is cost per day of use? Blend ₹ per gram × grams lost per day. The fill cancels. At 1 g/day: ₹2.69, ₹2.75, ₹2.80 a day here.

When is 22% cheaper per day than 18%? Only if it loses no more than 96.1% of 18%'s grams per day for the same room score.

What does the test cost? ₹3,974.22 for twelve bottles. See the kit.
The short answer
Answer: Make 18%, 20% and 22% in one base and oil, keep everything else identical, weigh each bottle with reeds daily for grams per day, score the room blind on your house scale, and multiply each blend's ₹ per gram by its measured g/day. Choose the lowest load that reaches your standard at the lowest cost per day.
Why: Cost per day = ₹/g × g/day, so a higher load is economical only if it uses less liquid for the same room score. Here 22% must lose ≤ 96.1% of 18%'s g/day. CSI publishes no throw or consumption data — only your sheet decides.
Method: Twelve Gold 50 ml bottles: three loads × (three reeded + one capped). Clarity at 0 h, after the 24–48 h rest and at 7 days; daily weights; blind scoring with coded bottles, short visits and three evaluators.
Shop: Pure Performance Base · Blue Ocean · Gold Reed Diffuser Bottle 50 ml · black fibre reeds · help on WhatsApp.
In this guide
18%, 20%, 22%: the price of each gram the bottle loses Pure Performance Base (500 ml) + Blue Ocean (100 g) · example density 1.00 g/ml · cost per day = ₹ per g × your measured g/day ₹2.69 per g of blend 18% load ₹2.69 per day per 1 g/day lost the reference arm ₹2.75 per g of blend 20% load ₹2.75 per day per 1 g/day lost cheaper per day than 18% only if it loses ≤ 98.0% of 18%'s g/day ₹2.80 per g of blend 22% load ₹2.80 per day per 1 g/day lost cheaper per day than 18% only if it loses ≤ 96.1% of 18%'s g/day A higher load is cheaper per day only when it lets the bottle use less liquid for the same room score — for example with fewer reeds. Weigh the bottles; the arithmetic cannot guess your g/day.
The cost side of an 18% / 20% / 22% comparison in Pure Performance Base with Blue Ocean at an example 1.00 g/ml. Cost per day of use is the blend's ₹ per gram times the grams per day you weigh, so a higher load pays for itself only if it uses proportionally less liquid for the same room score.
Neutral base for comparisons
Pure Performance · ₹325.00 / 100 g · ₹1,099.00 / 500 ml
The wider question
The most economical fragrance percentage
Set it up
Plan the comparison on WhatsApp
Straight answer
How do I compare 18%, 20% and 22% fragrance loads using room throw, liquid consumption and cost per day of use?
Make all three in one base and oil, change nothing else, and measure three things per load: a blind room score, grams lost per day, and cost per day. Use three reeded bottles and one capped clarity bottle per load, with 20% — the Pure Performance page's recommended point — as the control. Weigh every bottle with its reeds in at the same time daily: grams per day = weight lost ÷ days. Score the room blind on your own written scale, with coded bottles, short equal visits and three evaluators. Cost per day = the blend's ₹ per gram × your measured g/day; fill size cancels. In Pure Performance Base with Blue Ocean at an example 1.00 g/ml, a gram costs ₹2.69, ₹2.75 and ₹2.80, so 22% is cheaper per day than 18% only if it loses no more than 96.1% of 18%'s grams per day. Choose the lowest load that reaches your standard at the lowest cost per day. Twelve bottles cost ₹3,974.22.
One line: score the room, weigh the bottle, multiply ₹ per gram by g/day — the lowest load that passes usually wins.
Run 18%, 20% and 22% side by side in one base, one oil and one reed count, weigh every bottle daily, score the room blind, and cost each day. In Pure Performance Base with Blue Ocean, a gram of blend costs ₹2.69, ₹2.75 and ₹2.80 at the three loads. The twelve-bottle comparison costs ₹3,974.22.
See Pure Performance Base

Three numbers per load, and what each one tells you

Throw tells you whether a load works. Consumption tells you how long it works. Cost per day tells you what it costs to keep working.

Comparing 18%, 20% and 22% is a sensible narrow ladder: all three sit inside the 10–30% range every CSI base page gives, and they bracket the 20% the Pure Performance page recommends. The mistake is to compare them by smell alone on the day you make them. A load is only better if it gives your customer a stronger room for the same money, or the same room for longer. That needs three measurements, taken the same way for every bottle: a blind room score on your own labelled house scale, grams lost per day by weighing the bottle with its reeds in on a fixed schedule, and cost per day of use, which is the liquid's rupees per gram multiplied by the grams per day you measured.

CSI publishes no diffuser throw, evaporation or longevity data for any base, oil or reed, and this page invents none. What it can give you before you test is the cost side of the comparison — exactly — and the rule that tells you how much less liquid a higher load must use to pay for itself. The room and the scale give you the rest. The section pillar, how much fragrance oil to add to 100 ml of base, explains the load convention; 15%, 20% or 25% for commercial sale covers where to start a ladder; this page runs the narrow ladder above it.

Pure Performance 500 ml at ₹2.20 per ml = ₹2.20 per g at an example 1.00 g/ml · Blue Ocean ₹4.95 per g (100 g) · pulled 14 October 2026
The cost side of the comparison, before any testing
Load Oil per g of blend Base per g of blend Blend ₹ per g Liquid per 45 ml bottle Cost per day, per 1 g/day lost Must lose ≤ this share of 18%'s g/day to be cheaper per day
18% ₹0.89 ₹1.80 ₹2.69 ₹121.20 ₹2.69 reference
20% ₹0.99 ₹1.76 ₹2.75 ₹123.68 ₹2.75 98.0%
22% ₹1.09 ₹1.71 ₹2.80 ₹126.15 ₹2.80 96.1%

Read the last column carefully. Because cost per day is the blend's rupees per gram times grams per day, the fill size cancels out: a bottle that loses 1 g a day costs ₹2.69 a day at 18% and ₹2.80 at 22%, whatever size it is. So 22% is cheaper per day than 18% only if it loses no more than 96.1% of what the 18% bottle loses — at least 3.9% less liquid per day. Nothing about adding oil guarantees that. A higher load changes what is in the liquid, not, by itself, how fast the reeds draw it up; whether consumption falls, rises or stays the same is exactly what your weighing will show.

The CSI principle
Cost per day of use = blend rupees per gram × grams lost per day. The fill size cancels; the load and the consumption do not.
That makes the comparison fair across bottle sizes — and it means only a measured g/day, never an assumed one, can tell you which load is economical.

The comparison: twelve bottles, one variable

Load is the only thing that changes. Base lot, oil lot, bottle, fill weight, reed count, reed pack, room, holding area and scoring panel stay identical across all three arms. Each arm has three reeded bottles and one capped bottle for the clarity hold. The 20% arm is the control: it is the page's recommended working point and the load the other two must beat. Fills are set by weight — 45 g at an example 1.00 g/ml in a 45 ml fill of the Gold Reed Diffuser Bottle 50 ml — and every bottle gets 6 black fibre reeds from one pack.

12 bottles · 2 packs of Gold 50 ml · 45 g per bottle · 6 black fibre reeds per reeded bottle · one mix per arm
Arms and bottle numbers
Arm Load Reeded Capped hold Oil per bottle Base per bottle
Test 18% 18-1 to 18-3 18-H 8.10 g 36.90 g
Control 20% 20-1 to 20-3 20-H 9.00 g 36.00 g
Test 22% 22-1 to 22-3 22-H 9.90 g 35.10 g
1
Mix three blends by weight, same dayEach arm's blend is mixed from the same base and oil lots, weighed onto a tared vessel, stirred until uniform and covered. Rest all three 24–48 hours, as the base pages ask, before bottling.
2
Run the clarity check before reeds go inHold a sample of each blend against a white card and a black card at 0 h and after the rest. Haze, layering, droplets or sediment at any load stops that arm — step it down rather than bottling a blend that is already separating.
3
Fill by weight and record day-zero weightsFill each bottle to 45 g on the tared scale. Insert the reeds, flip once after the first hour as the Pure Performance page suggests, and weigh each bottle with its reeds in. That is the day-zero weight.
4
Hold all nine reeded bottles togetherKeep them side by side in one holding area, away from fans, AC vents and windows, at the same height. Record the room temperature at each weighing. Different spots mean different airflow, and airflow moves consumption more than a two-point load change can.
5
Weigh daily at the same timeGrams lost per day = (day-zero weight − today's weight) ÷ days. Use the average of the three bottles per arm. Note anything unusual — a reed knocked, a bottle moved.
6
Score the room blindOn scoring days, one person codes the bottles and carries one at a time into the test room; the evaluators do not know which load it is. Fixed room, door closed, fan off, fixed time in the room, fixed distance, fresh-air breaks between bottles, scores on your written scale.
Example house standard — YOURS, not an industry one (none exists) · example room 120 sq ft = 11.15 m² floor, 33.98 m³ at a 10 ft ceiling
Room-scoring sheet for one scoring day
Code Minutes in room Evaluator 1 (0–5) Evaluator 2 (0–5) Evaluator 3 (0–5) Mean Room °C
Bottle A ___ ___ ___ ___ ___ ___
Bottle B ___ ___ ___ ___ ___ ___
Bottle C ___ ___ ___ ___ ___ ___
Bottle D ___ ___ ___ ___ ___ ___
Bottle E ___ ___ ___ ___ ___ ___
Bottle F ___ ___ ___ ___ ___ ___
Bottle G ___ ___ ___ ___ ___ ___
Bottle H ___ ___ ___ ___ ___ ___
Bottle I ___ ___ ___ ___ ___ ___

The scale on that sheet is an example; write yours at the top before the first score and never change it mid-comparison. A common shape is 0 = nothing, 1 = only close to the bottle, 2 = noticeable on entering, 3 = clear throughout the room, 4 = strong, 5 = too strong. The room is a labelled example: a 120 sq ft bedroom is 11.15 m² of floor and, with a 10 ft ceiling, 33.98 m³ of air. There is no industry "ml per square foot" standard for diffusers, so use the room you are actually designing for. A 20% diffuser that cannot fragrance a 150 sq ft bedroom and why a diffuser works in a small AC bedroom and not a living room cover room size and airflow in depth.

Fresh noses, short visits
Smell is commonly described as adapting quickly — an evaluator who stays in the room stops noticing the fragrance. Keep each visit short and equal, send evaluators outside between bottles, and never let the person who coded the bottles score them. Three evaluators who disagree tell you more than one who is sure.

Turning the sheet into a decision

You are looking for the lowest load that reaches your house standard, then the cheapest day of use among the loads that reach it.

After seven days you have, for each arm, a mean room score, an average grams-per-day figure, and three capped bottles' clarity record. The economics follow directly. Days of life = fill grams ÷ grams per day; with your 45 g fill, a bottle losing x g a day lasts 45 g ÷ x days. Cost per day of liquid = blend ₹ per g × x. Write both into the results table below and the answer is usually obvious.

Results sheet — fill in your measured figures; this page supplies only the ₹ per g column
Seven-day results by load
Load Clear at 7 days? Mean room score (your scale) Average g/day (measured) Days of life = fill g ÷ g/day Blend ₹ per g Liquid cost per day = ₹/g × g/day
18% ___ ___ ___ 45 g ÷ ___ ₹2.69 ₹2.69 × ___
20% ___ ___ ___ 45 g ÷ ___ ₹2.75 ₹2.75 × ___
22% ___ ___ ___ 45 g ÷ ___ ₹2.80 ₹2.80 × ___
Working decision rule — apply after day 7; extend to 30 days for a product-life claim
Which load wins
If the sheet shows It means Choose
A higher arm is hazy or layered in the capped bottle Not stable at that load in this base The highest clear load only
All three reach your standard, similar g/day Extra oil is not buying anything you can measure 18% — the cheapest day of use
Only 20% and 22% reach your standard 18% is too weak for your room 20%, unless 22% loses less per day by more than 2.0%
Only 22% reaches your standard The room needs it, or something else is limiting 22% — and check reeds and base before going higher; see 7946
22% scores higher and loses clearly less per day The higher load is genuinely more economical 22%, confirmed over 30 days
None reaches your standard Load is not the limit Don't buy production quantities yet. Investigate base and reeds — 7947

Notice the third row. Between 20% and 22%, the higher load must lose no more than 98.0% of the 20% arm's grams per day to break even — the arithmetic is the same ratio of rupees per gram. Seven days is enough to see a clarity failure and a large difference in room score; it is not enough to make a product-life claim. For that, keep the bottles on the scale for 30 days, as the 30-day performance test describes, and project days of life from the later weeks rather than the first few, when fresh reeds are still filling.

The common mistake: comparing loads on day one, nose to the bottle. Every load smells strong at the neck of a freshly opened bottle. A maker sniffs all three, picks 22% as "strongest", and pays ₹495.36 more per hundred bottles in liquid for a difference nobody can find in a room a week later. Fix: score the room, not the bottle; blind, after the rest and on fixed days; and let the grams per day decide whether the stronger load lasts. A diffuser that smells strong at the bottle but not in the room explains why the two are different.

The money, honestly

Two cost views matter, and they give slightly different break-even lines. The first is the liquid alone, which is what the table above uses and what you control with the load: per gram, 22% costs ₹0.11 more than 18% — on a 45 ml fill, ₹4.95 more per bottle, ₹495.36 more per hundred bottles. The second is the whole product the customer buys — liquid, bottle and reeds — spread over its days of life. Glass and reeds cost the same at every load (₹130.60 here: a ₹82.60 bottle and 6 reeds at ₹8.00), so in this view the higher load needs a smaller consumption advantage to break even.

Whole product per bottle · 45 ml at 1.00 g/ml · Gold 50 ml ₹82.60 · 6 black reeds at ₹8.00 (50 and up)
Liquid-only versus whole-product break-even against 18%
Load Liquid per bottle Bottle + reeds Whole product Liquid break-even (share of 18%'s g/day) Whole-product break-even
18% ₹121.20 ₹130.60 ₹251.80 reference reference
20% ₹123.68 ₹130.60 ₹254.28 98.0% 99.0%
22% ₹126.15 ₹130.60 ₹256.75 96.1% 98.1%

In plain terms: if your customer pays ₹256.75 worth of materials for a 22% bottle and ₹251.80 for an 18% one, the 22% bottle is better value per day if it lasts at least 2.0% longer at an equal room score. Whether it does is a measurement. Oil price changes the picture: Blue Ocean is ₹4.95 per gram at 100 g and ₹4.96 at 1 kg — no break at all — so the 1 kg buys stock security, not a lower cost per day. With a dearer oil, the gap between loads widens and a higher load must work harder to pay for itself. The most economical fragrance percentage runs this across a wider range of loads and oils.

Argued against our own interest, plainly. The more oil you use, the more you buy from us. If 18% reaches your standard and loses no more per day than 22%, sell 18% — it is the cheaper product every day it sits on a shelf, and on this pairing it saves ₹495.36 of liquid per hundred bottles. And for the trial itself, do not buy the 1 kg of Blue Ocean: two 50 g and a 15 g cover all twelve bottles.

The priced twelve-bottle comparison

Built from listed, in-stock CSI packs, with a 3% working allowance on the liquid. Pure Performance is the only CSI base sold in 100 g as well as 500 ml; the 100 g costs ₹3.25 per gram and the 500 ml ₹2.20 per ml, so the 500 ml is cheaper per gram for any base density above 0.676 g/ml. At this test's size the single 500 ml covers everything.

12 bottles · base, bottles and reeds pulled 14 October 2026 · oil pulled 24 September 2026, stock re-checked 14 October 2026
18% / 20% / 22% comparison kit
Item Need Buy Price
Pure Performance Base 445.0 g at 1.00 g/ml 1 × 500 ml ₹1,099.00
Blue Ocean 111.2 g 2 × 50 g + 1 × 15 g ₹587.22
Gold Reed Diffuser Bottle 50 ml 12 bottles 2 packs of 10 ₹1,652.00
black fibre reeds 9 × 6 1 × pack of 50 + 1 × pack of 25 ₹636.00
Total ₹3,974.22
A load is not stronger because it smells stronger at the bottle. It is better when the room says so and the scale agrees it lasts.
— CandleMakingSuppliesIndia
Choosing a load for Diwali gifting on Sunday 8 November 2026? A seven-day comparison started this week finishes with about two weeks left for production — enough to choose between three loads, not enough for a 30-day life claim. Promise a fragrance, not a number of weeks. Send us your room, bottle and oil on WhatsApp and we will help you set up the comparison — listed packs only, larger quantities by quote, no published volume discount.
Plan my load comparison

The CSI products in this comparison

1
Base for this comparison · neutral, all families
Pure Performance Base — Professional Reed & Car Diffuser Base
CSI's product page describes Pure Performance as neutral, with "no added fixatives, no complex enhancements", suitable for all fragrance families, starting at 10% up to a maximum of 30%, with 20% recommended and a typical working blend of 75% base + 25% fragrance. That neutrality is why it is a sensible base for a load comparison — a claim to test, not a result. It is the only CSI base also sold in 100 g; the 500 ml is cheaper per gram above 0.676 g/ml.
Size Price Per listed unit Per gram Stock (14 Oct 2026)
100 g ₹325.00 ₹3.25 per g ₹3.25 (weighed, no density needed) In stock
500 ml ₹1,099.00 ₹2.20 per ml ₹2.20 at an example 1.00 g/ml In stock
₹1,099.00 for the comparison Buy Pure Performance Base
2
Example oil · 9.00 g per bottle at 20%
Blue Ocean Fragrance Oil
An aquatic fragrance near the top of CSI's best-selling sort. The Longevity page tells you to avoid aquatics in that base, which is one reason to compare loads in the neutral Pure Performance. No per-gram break at all from 50 g to 1 kg. CSI publishes no density, IFRA percentage or diffuser performance for it — ask on WhatsApp for its IFRA certificate and read the Category 10A limit.
Pack Price Per gram Bottles at 9.00 g oil
15 g ₹93.22 ₹6.21 1.7
50 g ₹247.00 ₹4.94 5.6
100 g ₹495.00 ₹4.95 11.1
500 g ₹2,478.00 ₹4.96 55.6
1 kg ₹4,956.00 ₹4.96 111.1
₹587.22 for 2 × 50 g + 1 × 15 g Buy Blue Ocean
3
Two packs · 12 bottles
Gold Reed Diffuser Bottle (clear glass, gold-tone screw cap)
Clear glass, gold-tone screw cap. A 45 ml fill in the 50 ml variant is this page's example; the fill line is not published. Set your fill by weight once you know your blend's density.
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
₹1,652.00 for 2 × 10 × 50 ml Buy Gold Reed Diffuser Bottles
4
6 per bottle, one pack
Fiber Diffuser Reeds (Black)
Fibre reeds, 20.3 cm, diameter not published. 6 is the low end of the 6–8 the reed page suggests for 50–100 ml — keep it fixed across all arms; changing reed count is a separate experiment (how many reeds to test).
Pack Price Per reed Bottles at 6 reeds
Pack of 25 ₹236.00 ₹9.44 4
Pack of 50 ₹400.00 ₹8.00 8
Pack of 100 ₹800.00 ₹8.00 16
Pack of 500 ₹4,000.00 ₹8.00 83
₹636.00 for 1 × pack of 50 + 1 × pack of 25 Buy black fibre reeds
Comparing different loads, or another oil? The cost column is all you need to recompute: blend ₹ per g = L × oil ₹/g + (1 − L) × base ₹/g. The 22% cost-per-bottle breakdown shows every line of a 120 ml bottle; standardise or optimise each SKU covers running each fragrance at its own winning load; 20% to 30% covers the top of the range. Bases are in Reed & Car Diffuser Base.
Why trust this guide

CANDLEMAKINGSUPPLIESINDIA supplies raw materials, not finished diffusers. The page tells you that a higher load means more oil bought from us and should be chosen only if the room and the scale justify it, that the 1 kg of this oil is no cheaper per gram than the 100 g, and that seven days is too short for any product-life claim.

Diffuser base, reed, bottle, beaker, scale and mixer prices are CSI live pricing, pulled 14 October 2026. Fragrance-oil prices are CSI live pricing, pulled 24 September 2026, stock re-checked 14 October 2026. Every gram, millilitre, pack count, per-bottle cost and kit total on this page is computed and shown to two decimals so you can check it; ml ↔ g conversions use labelled example densities with a ±5% sensitivity, because no density is published for any CSI base or oil.

Bottle counts per arm, rest and hold checkpoints, weighing schedules, room-scoring scales, filling-loss allowances and pass lines are labelled working practices, not industry standards — none is published for reed diffusers. The 45 ml fill, the 1.00 g/ml density, the 6 reeds, the 120 sq ft example room with a 10 ft ceiling, the 0–5 scale, the three evaluators, the 3% allowance and the 7-day window are labelled examples you replace with your own. For help building a test kit, bulk quotes, GST invoicing, an oil's MSDS or IFRA certificate, or to ask whether an SDS or technical data sheet is available for a base, message us on WhatsApp at +91 7397976926.

Frequently asked questions

What fragrance percentage is best for reed diffusers?
There is no single answer; CSI's base pages give 10–30% with 20% recommended as a working point. The best load for your product is the lowest one that reaches your room standard at the lowest cost per day — measure it with a side-by-side test.
Is 22% fragrance oil better than 18% in a reed diffuser?
Only if your room scores it higher, or it lasts long enough to pay for the extra oil. In this example 22% must lose no more than 96.1% of the 18% bottle's grams per day to be cheaper per day.
How do I measure reed diffuser evaporation?
Weigh the bottle with its reeds in, at the same time every day, on the same scale. Grams per day = weight lost ÷ days. Keep all test bottles in one spot away from fans and vents and record the room temperature.
How do I calculate reed diffuser cost per day?
Blend cost per gram × grams lost per day. For the whole product, divide liquid + bottle + reeds by days of life, which is fill grams ÷ grams per day.
How do I test reed diffuser throw?
Score the room, not the bottle: a fixed closed room, fan off, fixed time and distance, coded bottles, three evaluators with fresh-air breaks, on a scale you write down before the first score.
How long should I test reed diffuser fragrance loads?
Seven days shows clarity failures and large differences in room score. A product-life claim needs about 30 days of daily weighing, projected from the later weeks.
Let the room and the scale decide
Three loads, one variable, a blind panel and a scale.
Pure Performance Base ₹325.00 for 100 g or ₹1,099.00 for 500 ml, Blue Ocean from ₹93.22 for 15 g, Gold Reed Diffuser Bottle 50 ml ₹826.00 for ten, black fibre reeds from ₹236.00 for 25. Send us your room and bottle and we will help you set up the comparison.
Shop reed diffuser bases Set up my comparison on WhatsApp
Continue the read — Fragrance oil percentages and formula calculations
Editorial standards & sources
About this guide: Written by the CANDLEMAKINGSUPPLIESINDIA team. The cost-per-day arithmetic, test design, scoring sheet and decision rule apply to any base and oil from any supplier; 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: 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 products — CSI live pricing, pulled 14 October 2026: Pure Performance Base ₹325.00 / 100 g, ₹1,099.00 / 500 ml; Gold Reed Diffuser Bottle 50 ml pack of 10 ₹826.00, 120 ml pack of 10 ₹1,062.00; 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.

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)). Reader's figures: loads of 18%, 20% and 22%. Labelled examples: 45 ml fill at 1.00 g/ml; 6 reeds per bottle; a 120 sq ft room with a 10 ft ceiling (11.15 m², 33.98 m³); a 0–5 house scale; three evaluators; 3% liquid allowance; 7-day window, 30 days for life claims. Pure Performance breakeven density between the 100 g and 500 ml sizes: ₹1,099.00 ÷ 500 ml ÷ ₹3.25 per g = 0.676 g/ml. What CSI's diffuser-base pages state (quoted as claims to test, not CSI test results): every base is a crystal-clear "Professional Reed & Car Diffuser Base" with a 10–30% fragrance range and a 24–48 hour rest before bottling. Pure Performance — neutral, for all families, 20% recommended, typical 75% base + 25% fragrance, example 75 ml + 25 ml for 100 ml at 25%; Longevity — oriental, woody, resinous, spicy and gourmand, avoid light florals, citrus and aquatics, "heavy oils like oud can cloud at maximum load in some bases"; Lift — floral, citrus, green and fruity; Depth — chypre, leather, smoky and rich gourmand; Softness — soft florals, powdery/musky and light gourmand. CSI HyperDiffusion Base™ (₹1,499.00) is out of stock. Reed page: length 20.3 cm and "6–8 reeds" for a standard 50–100 ml bottle; reed diameter not published. Gold bottle: neck diameter, fill line and any reducer not published. CSI publishes no composition, density, viscosity, evaporation rate, flash point or shelf life for any diffuser base, no density or IFRA percentage for any fragrance oil, and no diffuser throw, consumption or longevity data for any base, oil or reed. Every density on this page is a labelled example, every load above the page range is excluded, and every pass line is the reader's labelled house standard. IFRA: reed diffusers are listed under Category 10A in current IFRA amendments as commonly summarised by suppliers' IFRA guides — confirm against the category descriptions on your oil's certificate; the lower of the base page's 30% and the certificate's limit applies. Material costs exclude labour, packaging, freight and GST. Diwali 2026 falls on Sunday 8 November.
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