How Much Reed Diffuser Base and Fragrance Oil Do I Need for a 500 g Trial Batch at 20% Fragrance Load?

How Much Reed Diffuser Base and Fragrance Oil Do I Need for a 500 g Trial Batch at 20% Fragrance Load?

 

Depth Base ₹1,099.00 / 500 ml Roasted Coffee ₹390.00 / 100 g Gold bottle 50 ml ₹82.60 each (pack of 10)
CSI reed diffuser guide · Fragrance oil percentages and formula calculations
Weigh a 500 g trial batch at exactly 20%, split it into bottles without running short, and use it to answer one real question.
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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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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 batch calculations set out below. Wording is unedited.
Shop reed diffuser bases Plan my trial batch
✓ Base, bottle and mixer 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 × Trial Batch
Write the batch as a total and split it: 500 × 0.20 is the oil, 500 × 0.80 is the base. One 500 ml of base covers the 400 g at any density in the band; one 100 g of oil covers the 100 g with nothing to spare. Then fill ten bottles and let the batch answer a question.
100 g + 400 g
oil + base for a 500 g trial batch at 20% of the total blend, weighed — one 500 ml of base and one 100 g of oil
Quick answers — read this first
How much oil and base for 500 g at 20%? 100 g oil + 400 g base, weighed. Not 500 g of base plus 100 g of oil — that is 600 g at 16.67%.

What do I buy? One 500 ml of base (it covers 400 g at any density from 0.95 to 1.05 g/ml) and one 100 g of oil — add a 15 g for margin if you like.

How many bottles does it fill? After a 3% allowance, 485 g: 12 × 50 ml at 40 g, or 4 × 120 ml at 100 g (example fills).

What does the trial cost? ₹3,379.00 with Depth Base, Roasted Coffee, ten 50 ml bottles, reeds and a mixer. See the priced trial.
The short answer
Answer: A 500 g batch at 20% is 100 g of fragrance oil and 400 g of base, weighed into one vessel — the load is a share of the total blend.
Why: Adding 100 g of oil to 500 g of base makes a 600 g batch at 16.67%. Weighing makes the load exact whatever the densities.
Method: Tare, base, tare, oil from the pack; mix for a written time; rest 24–48 h covered; clarity check; fill by weight; seal a retained sample. Use the batch to test the rest itself: bottles filled at 0 h vs after 48 h.
Shop: Depth Base · Roasted Coffee · 50 ml Gold bottles · white fibre reeds · CSI Pro Mixer · help on WhatsApp.
In this guide
Where a 500 g trial batch at 20% goes 100 g oil + 400 g base, weighed · 3% transfer loss (working allowance) · example fills 40 g per 50 ml bottle In oil 100 g base 400 g (≈ 400 ml at an example 1.00 g/ml) mix · rest 24–48 h · clarity check Out A · 3 × 40 g rested 48 h B · 3 × 40 g filled at 0 h C · 4 × 40 g field testers retained 85 g sealed, labelled transfer loss 15 g ↑ The mistake to avoid: 500 g of base + 100 g of oil is a 600 g batch at only 16.67%. A 500 g batch at 20% is 100 g + 400 g. For a true 20% on all 500 g of base, add 125 g of oil (625 g batch).
The 500 g batch ledger: 100 g oil and 400 g base in; 15 g transfer loss (a 3% working allowance); ten 50 ml bottles at 40 g each in three arms; 85 g kept as a sealed retained sample. Adding 100 g of oil to 500 g of base instead gives 600 g at 16.67%.
Section pillar
How much fragrance oil to add to 100 ml of base
Trial base
Depth Base · ₹1,099.00 / 500 ml
Next step
Scale a trial formula to a 10 kg batch
Straight answer
How much reed diffuser base and fragrance oil do I need for a 500 g trial batch at 20% fragrance load?
100 g of fragrance oil and 400 g of base, weighed: 500 × 0.20 and 500 × 0.80. CSI's base pages count load as a share of the total blend, so the oil sits inside the 500 g, not on top — 500 g of base plus 100 g of oil is a 600 g batch at only 16.67%. To buy it: one 500 ml bottle of base covers the 400 g at any density from an example 0.95 to 1.05 g/ml (CSI publishes none), leaving roughly 75–125 g; one 100 g pack of oil covers the 100 g with no margin, so pour straight from the pack onto the scale or add a 15 g for safety. Mix, rest 24–48 hours covered as every CSI base page asks, check clarity, then fill by weight. Allow about 3% for liquid left on the vessel: 485 g fills ten 50 ml bottles at 40 g each with 85 g kept as a retained sample. With Depth Base and Roasted Coffee, the whole trial costs ₹3,379.00.
One line: 500 × 0.2 = 100 g oil; 500 × 0.8 = 400 g base — one 500 ml of base, one 100 g of oil.
A 500 g trial batch at 20% is 100 g of oil and 400 g of base, weighed. With Depth Base (its page names coffee) and Roasted Coffee, that is one 500 ml of base and one 100 g of oil — and with ten 50 ml Gold bottles, reeds and a mixer, the whole trial costs ₹3,379.00.
See Depth Base

The recipe: 100 g of oil, 400 g of base

A 500 g batch at 20% is a 500 g batch. The oil is inside the 500, not on top of it.

CSI's base pages count fragrance load as a share of the total blend, so the arithmetic is one line each: oil = 500 × 0.20 = 100 g; base = 500 × 0.80 = 400 g. Weigh both into one clean, dry vessel and you have exactly 500 g of finished blend at exactly 20%, whatever the densities of the two liquids. The same convention runs through every page in this section; the fragrance-load pillar explains it from first principles, including the formula for adding oil to a fixed quantity of base.

Three ways makers write "500 g at 20%" · only the first is a 500 g batch at 20%
The batch you meant, and two you might have made
What was weighed Oil Base Batch True load
500 × 20% oil + 500 × 80% base (correct) 100.00 g 400.00 g 500.00 g 20.00%
500 g base + 20% of it as oil 100.00 g 500.00 g 600.00 g 16.67%
500 g base + oil for a true 20% 125.00 g 500.00 g 625.00 g 20.00% — but a 625 g batch

The second row is the one that catches people: it uses up a whole 500 ml bottle of base, makes a bigger batch than planned, and quietly lands at 16.67%. If that batch is then judged "weak at 20%", the formula is blamed for an arithmetic slip. The third row is correct — oil = base × L ÷ (1 − L) — but gives you 625 g rather than the 500 g trial you planned, and needs 125 g of oil, which no single CSI oil size covers exactly.

The CSI principle
Write the batch as a total, then split it. Never start from "a bottle of base" and add oil on top.
500 g × 0.20 = 100 g oil; 500 g × 0.80 = 400 g base. One multiplication each, and the load is exact.

What to buy for it — and what the density band means

CSI lists every diffuser base in 500 ml (and Pure Performance also in 100 g). Your recipe is in grams. The bridge is your base's density, which CSI does not publish. At example densities across a ±5% band, the 400 g of base you need is between 381 ml and 421 ml — comfortably inside one 500 ml bottle at any density in the band — and the bottle will have between 75 g and 125 g left over.

Example densities — weigh 100 ml of your own base and blend to get yours
The 500 g batch through the density band
If the liquid weighs 400 g of base is Left in a 500 ml base bottle 500 g of finished blend is
0.95 g/ml 421.1 ml 75.0 g 526.3 ml
1.00 g/ml 400.0 ml 100.0 g 500.0 ml
1.05 g/ml 381.0 ml 125.0 g 476.2 ml

The oil is the tight line. Roasted Coffee is sold in 15 g, 50 g, 100 g, 500 g and 1 kg, and your recipe needs exactly 100 g. One 100 g pack at ₹390.00 covers it with no margin at all — every drop must come out of the bottle and onto the scale. Two 50 g packs cost ₹460.00, more than the 100 g, for the same grams. If you want a safety margin, add a 15 g pack (₹93.22) for ₹483.22 in total. Per gram, the 100 g is ₹3.90, the 1 kg ₹3.74 and the 15 g ₹6.21 — so the small pack is the expensive way to buy margin, but the cheapest way to avoid running 2 g short in the middle of a batch.

Weigh the oil out of its bottle, not into a second container
For a tight line like this, put the mixing vessel with the base already in it on the scale, tare, and pour the oil straight from its pack. Every transfer into a measuring cup leaves a film behind; with a 100 g pack and a 100 g need, one extra transfer can cost you the batch.

Mixing 500 g, resting it, and checking it before you fill

Half a kilogram is too much for the 250 ml beaker and too much to mix bottle by bottle. Use one clean, dry, clear glass jar or jug large enough for about 526 ml with room to stir — not a CSI item; any you own works if it has never held water-based or fragranced products — and mix with the CSI Pro Mixer or a clean stirrer. Glass lets you check clarity in the same vessel.

1
Tare the vessel and weigh in the base400 g of Depth Base. Base first: it is the larger quantity, and an overshoot of a few grams moves the load only slightly.
2
Tare again and add the oil100 g of Roasted Coffee, poured directly from its pack, slowing for the last few grams. If you overshoot, recalculate rather than pouring back: extra base = oil × 0.8 ÷ 0.2 − base already in.
3
Mix until uniformWith the handheld mixer or a stirrer, for a fixed time you write down — for example two minutes, a labelled working practice, not a CSI instruction. Look for streaks: an oil that is denser or lighter than the base can sit in a layer until mixed.
4
Cover and rest 24–48 hoursEvery CSI base page asks for a 24–48 hour rest before bottling. Cover the vessel to keep dust out and fragrance in. Note the room temperature.
5
Clarity check before fillingAgainst a white card and a black card: haze, layers, droplets or sediment? A blend that is hazy after resting will not become clear in the bottle. If it fails, see the decision rule — do not add water or alcohol to fix it.
6
Fill by weight and seal a retained sampleTare each bottle, fill to 40 g for a 50 ml or 100 g for a 120 ml (example fills), cap. Pour what is left into a clean, labelled glass container, seal it and keep it out of light as your reference.

The Depth page says this base "stabilises tricky sweet and spicy fragrance oils" — a claim to test, not a result. The clarity check is how you test it for your oil. If your coffee oil, or whichever oil you use, hazes at 20% after the rest, the separation question belongs to the lavender-fine-vanilla-separates post and the cloudy-after-mixing post; mixing so the liquid stays clear and uniform covers technique in more depth.

How many bottles 500 g fills

Plan on losing a little. Liquid clings to the vessel wall, the mixer and any funnel; a 3% transfer-loss allowance — 15 g on this batch, a labelled working assumption — leaves 485 g to bottle. CSI publishes no fill line for its Gold bottles, so the fills below are examples that leave headroom for reeds.

485 g usable after a 3% allowance · example fills 40 g per 50 ml and 100 g per 120 ml
Three ways to split the batch
Split 50 ml bottles 120 ml bottles Bottled Left over
All 50 ml 12 0 480 g 5 g
All 120 ml 0 4 400 g 85 g
Mixed: 2 × 120 ml + rest 50 ml 7 2 480 g 5 g

For a trial, the 50 ml split is the useful one: more bottles means more people can live with the formula, and more bottles means more arms for a test. This page uses ten 50 ml bottles from one pack (400 g) and keeps the remaining 85 g as a sealed retained sample — your reference if a later batch smells or looks different. The density and fill-count post does the same split for 1 kg of finished liquid, and the 100-bottle post scales it to a production run.

Use the batch to test one thing: does the rest matter?

A trial batch should answer a question. This one asks whether the 24–48 hour rest changes your diffuser.

Every CSI base page asks for a 24–48 hour rest before bottling. In a hurry — a festive order, a market stall — makers are tempted to skip it. A 500 g batch lets you find out, for your oil and base, what skipping it does, because you can fill some bottles the moment the batch is mixed and the rest after the rest. Everything else is identical: same batch, same fill, same reeds, same room. That makes it a clean one-variable test.

Ten 50 ml bottles from one 500 g batch · 40 g each · 7 white fibre reeds each
Arms
Arm Bottles Filled Reeds in Purpose
A — control C1–C3 After the 48 h rest After the rest The page's method
B — no rest C4–C6 Straight after mixing Straight away Does skipping the rest change clarity or strength?
C — field C7–C10 After the 48 h rest When you hand them over Testers in their own homes; you record their room and feedback
Retained — After the rest None 85 g reference, sealed

Weigh A and B bottles on day 0, 3, 7 and 14 for grams lost per day; check clarity at day 7; score them blind in your house room on day 3 and day 7 — door closed, fan off, fixed distances, evaluators from fresh air, one coded bottle at a time. If the B bottles are hazier, smell different in the first days, or lose weight differently, the rest matters for this pair and you keep it in your process. If A and B are indistinguishable on every line, you have learned something useful for rush orders — and you still keep the rest for production, because it costs nothing but time and is what the page asks.

Your figures · example 0–5 house scale at your fixed distance (not an industry standard)
Rest-test record sheet
Bottle Arm Day 0 (g) Day 3 (g) Day 7 (g) Day 14 (g) g/day Score d3 Score d7 Clear d7?
C1 A ___ ___ ___ ___ ___ ___ ___ ___
C2 A ___ ___ ___ ___ ___ ___ ___ ___
C3 A ___ ___ ___ ___ ___ ___ ___ ___
C4 B ___ ___ ___ ___ ___ ___ ___ ___
C5 B ___ ___ ___ ___ ___ ___ ___ ___
C6 B ___ ___ ___ ___ ___ ___ ___ ___
The common mistake: changing two things in the trial batch. A maker skips the rest and uses a different oil lot for the B bottles, or fills B bottles fuller because they were done first. The B bottles behave differently, and nobody knows why. Fix: one batch, one oil lot, the same fill weight, the same reeds; the only difference is when the bottles were filled.

What the batch and each bottle cost

Depth Base 500 ml · Roasted Coffee at the 100 g price · base ₹/g at 0.95 / 1.00 / 1.05 g/ml
Liquid cost of the 500 g batch
Line Grams Rate Cost
Roasted Coffee 100 g ₹3.90 per g (100 g) ₹390.00
Depth Base 400 g ₹2.20 per g at 1.00 g/ml ₹879.20
Batch liquid 500 g ₹1,315.47 at 0.95 · ₹1,227.33 at 1.05 ₹1,269.20
Per gram of finished blend 1 g ₹2.54
Liquid per 50 ml bottle (40 g) 40 g ₹101.54
Liquid per 120 ml bottle (100 g) 100 g ₹253.84

Add the bottle (₹82.60 each for 50 ml) and seven white reeds (₹63.00) and a 50 ml trial bottle costs ₹247.14 in materials, before labels, box, labour, freight and GST. The base is the larger share of the liquid cost here, because coffee is not an expensive oil per gram. At production rates — the oil's 1 kg price of ₹3.74 per gram — the same formula costs ₹2.51 per gram of blend at an example 1.00 g/ml, a small saving: this oil's per-gram price barely falls above 100 g, which is typical of CSI's range. Costing a 120 ml bottle at 22% and the 100 ml cost post build full product costs.

The priced trial

500 g at 20% · ten 50 ml bottles · bases, reeds, bottles, mixer CSI live pricing, pulled 14 October 2026 · oil CSI live pricing, pulled 24 September 2026, stock re-checked 14 October 2026
Everything for the trial batch and the rest test
Item Need Buy Price Skip if
Depth Base 400 g 1 × 500 ml ₹1,099.00 You trial in another base
Roasted Coffee (example oil) 100 g 1 × 100 g ₹390.00 You have your own oil
Gold Reed Diffuser Bottle 50 ml 10 bottles 1 × pack of 10 ₹826.00 You fill your own bottles
Fiber Diffuser Reeds (White) 70 reeds 1 × pack of 50 + 1 × pack of 25 ₹715.00 You hold reeds
CSI Pro Mixer 1 1 ₹349.00 You stir by hand in glass
Trial total ₹3,379.00
Roasted Coffee 15 g (margin) optional 1 × 15 g ₹93.22 You are confident of a clean pour
With oil margin ₹3,472.22

No scale is listed here because you cannot make a batch like this without one; if you do not own one, add the Weighing Scale at ₹354.00 and check its display steps. The base bottle will have roughly 100 g left at an example 1.00 g/ml — enough for a 120 ml keeper bottle or a small second test, not for a second batch.

Argued against our own interest, plainly. A trial batch is the point at which makers are tempted to buy production quantities "to save time" — five 500 ml bases and a kilogram of oil. Do not. Nothing about a 500 g trial needs more than one bottle of base and one 100 g of oil, and if the batch hazes or the testers dislike it, the production stock is the expensive mistake. Buy for production after the day-14 read.
Diwali is Sunday 8 November 2026 — 25 days away. A 500 g batch mixed this week, rested 48 hours and read at day 7 still leaves time to place a production order; a 30-day read does not fit before the festival. Message us on WhatsApp with your oil and base for the IFRA certificate and help planning the run. Listed packs only; larger quantities by quote, no published volume discount.
Plan my trial batch

After the trial: the decision rule

Apply after day 14 · stop at the first line that is true
From the trial batch to a production purchase
If this is true It means Do this
Batch hazy or layered after the 48 h rest This oil at 20% is not stable in this base Don't buy yet. Retrial at 15%, or in the base the page assigns to the family
B bottles hazier or different from A The rest matters for this pair Keep the 24–48 h rest in your process; never skip it for rush orders
A and B identical; scores below your target 20% is too thin here — or the reeds or room are Test 25% and a reed count before more oil
Scores at target, clear, testers positive The formula is ready Order base in 500 ml and oil for your first run, sized with allowances
Testers report weak in large rooms only Room size, not formula Keep 20%; describe the product for the room it suits

When the formula passes, the scale-up is a multiplication, not a new recipe: 20% of whatever total you make is oil, 80% is base. From 100 g to a 10 kg batch covers mixing larger volumes, base for 100 bottles at 20% sizes a production order, and the section capstone runs the whole route to 25 kg.

Five hundred grams at twenty per cent is one hundred and four hundred. The batch you meant is the batch you weighed.
— CandleMakingSuppliesIndia

The CSI products in this trial

1
Trial base · page names coffee
Depth Base
CSI's product page describes Depth as adding warmth and roundness with "slow diffusion", for chypre, leather, smoky and rich gourmand families (coffee, chocolate, spiced vanilla), "stabilises tricky sweet and spicy fragrance oils", 10–30%, rest 24–48 hours. All claims to test; composition and density are not published.
Size Price Per unit Bottles at 32.0 g base (example 1.00 g/ml)
500 ml ₹1,099.00 ₹2.20 per ml 15.62
₹1,099.00 covers the 400 g needed Buy Depth Base
2
Example oil · 8 g per 50 ml bottle at 20%
Roasted Coffee Fragrance Oil
A gourmand the Depth page's family list covers. CSI publishes no diffuser performance or IFRA percentage for any oil — ask for its IFRA certificate on WhatsApp and read the Category 10A figure.
Pack Price Per gram Bottles at 8.0 g oil
15 g ₹93.22 ₹6.21 1.88
50 g ₹230.00 ₹4.60 6.25
100 g ₹390.00 ₹3.90 12.50
500 g ₹1,890.00 ₹3.78 62.50
1 kg ₹3,738.00 ₹3.74 125.00
₹390.00 for the 100 g the recipe needs Buy Roasted Coffee
3
7 reeds per 50 ml bottle
Fiber Diffuser Reeds (White)
Fibre reeds, 20.3 cm; CSI does not sell rattan. The page suggests 6–8 reeds for 50–100 ml bottles — guidance to test. White ₹9.00 each from the 50-pack; diameter not published.
Pack Price Per reed Bottles at 7 reeds
Pack of 25 ₹265.00 ₹10.60 3
Pack of 50 ₹450.00 ₹9.00 7
Pack of 100 ₹900.00 ₹9.00 14
Pack of 500 ₹4,500.00 ₹9.00 71
₹715.00 for 1 × pack of 50 + 1 × pack of 25 Buy white fibre reeds
4
Trial bottle · 50 ml
Gold Reed Diffuser Bottle (clear glass, gold-tone screw cap)
Clear glass, gold-tone screw cap. The 50 ml pack of ten is the cheapest way to put a formula in many hands. Fill line and neck diameter are not published — fill by weight.
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
₹826.00 for ten 50 ml Buy Gold Reed Diffuser Bottles
A different batch size? Oil = batch × L, base = batch × (1 − L), for any total. One 120 ml bottle, 100 bottles and 10 kg use the same two lines. Bases: Reed & Car Diffuser Base; oils: Fragrance Oils.
Why trust this guide

CANDLEMAKINGSUPPLIESINDIA supplies raw materials, not finished diffusers. An oil and base seller gains when a trial batch turns into a production order before it has been tested. This page keeps the trial to one bottle of base and one 100 g of oil, tells you plainly that buying production stock before day 14 is the expensive mistake, and says that we publish no density, composition, evaporation or throw data for any base or oil.

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 3% transfer loss, the 40 g and 100 g fills, the 0.95/1.00/1.05 g/ml densities and the two-minute mix are labelled working assumptions 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

How do I make a 500 g batch of reed diffuser oil?
Weigh 400 g of base into a clean, dry glass vessel, tare, add 100 g of fragrance oil for 20%, mix until uniform, cover and rest 24–48 hours, check clarity, then fill bottles by weight.
How much fragrance oil for 500 ml of reed diffuser base?
For a true 20% of the finished blend, oil = base × 0.2 ÷ 0.8. If 500 ml of your base weighs 500 g (an example 1.00 g/ml), that is 125 g of oil for a 625 g batch.
How many reed diffusers does 500 g make?
After about 3% transfer loss, roughly 12 bottles of 50 ml at 40 g or 4 bottles of 120 ml at 100 g — example fills. No fill line is published for CSI's bottles.
Do I need to rest reed diffuser oil before bottling?
Every CSI base page asks for a 24–48 hour rest. A 500 g batch lets you test what skipping it does for your oil and base — but keep the rest in production.
Can I mix reed diffuser base and fragrance oil in a plastic jug?
Use clean, dry glass where you can: it lets you check clarity in the vessel and avoids unknown residues. Never use a container that has held water-based or fragranced products.
Is 500 g a good size for a reed diffuser trial batch?
It is large enough to fill ten 50 ml bottles for a one-variable test and testers, and small enough to need only one 500 ml of base and 100 g of oil.
One bottle of base, one 100 g of oil
100 g + 400 g, weighed, rested, checked, bottled.
Depth Base ₹1,099.00 for 500 ml, Roasted Coffee ₹390.00 for 100 g, Gold Reed Diffuser Bottles ₹826.00 for ten 50 ml, white fibre reeds from ₹265.00 for 25, CSI Pro Mixer ₹349.00. Send us your batch plan and oil and we will check the grams and send the IFRA certificate.
Shop reed diffuser bases Check my batch on WhatsApp
Continue the read — Fragrance oil percentages and formula calculations
Editorial standards & sources
About this guide: Written by the CANDLEMAKINGSUPPLIESINDIA team. The batch arithmetic, split table, rest test and decision rule apply to any base and oil; 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: Roasted Coffee Fragrance Oil ₹93.22 / 15 g, ₹230.00 / 50 g, ₹390.00 / 100 g, ₹1,890.00 / 500 g, ₹3,738.00 / 1 kg. Diffuser bases, reeds, bottles and tools — CSI live pricing, pulled 14 October 2026: Depth Base ₹1,099.00 / 500 ml; Pure Performance Base ₹325.00 / 100 g, ₹1,099.00 / 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; Silicon Measuring Beaker 100 ml ₹300.00, 250 ml ₹600.00; Weighing Scale ₹354.00; CSI Pro Mixer ₹349.00.

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 densities 0.95, 1.00 and 1.05 g/ml; 3% transfer-loss allowance (15 g); example fills 40 g per 50 ml and 100 g per 120 ml bottle; 7 reeds per bottle; 3 bottles per test arm; example two-minute mix; weighing at day 0, 3, 7 and 14. Batch cost uses the Roasted Coffee 100 g price and Depth 500 ml; the production comparison uses the 1 kg oil price. 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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