Why Every New Wax × Wick × Fragrance Combination Needs Burn Testing
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How many tests do I really need? Fewer than 54 if you test in the right order. Freeze the wax and the vessel, find the wick first, then run the scents against that wick: 14 test jars covers a three-wax, three-wick, six-scent shelf across two diameters. That programme costs about ₹3,480.70 against a 500-candle run worth ₹1,22,861.
What is a pass? A cured candle that opens a full melt pool to the glass in about two to three hours, with no soot, no mushrooming, a pool depth that stays sensible, and a throw you would pay for — repeated over three burn sessions, in the vessel you actually sell.
When do I judge it? Not at 48 hours. The Luxury Soy Wax Chunks page states a cure of minimum 48 hours, ideally 1–2 weeks; 14–21 days is standard practice for soy containers. A verdict on day 2 is a verdict about a different candle.
How many candles you actually own
Ask a small brand how many products it has and you will hear "six scents". Ask how many distinct candles it is putting into the world and the honest answer is the product of every input that affects the burn. Four inputs matter: the wax, the wick (type and size count separately), the fragrance, and the vessel diameter. Load is a fifth, but for most makers it is fixed per wax, so treat it as part of the wax axis until you deliberately change it.
The formula is unglamorous and worth writing on the wall: combinations = waxes × wick options × fragrances × vessel diameters. Nothing adds. Everything multiplies. That is why a brand that feels small on paper can be running dozens of untested candles, and why the honest number is usually a shock the first time someone works it out.
| Your shelf | Distinct candles | Jars for a full test at 3 per combination | Where a maker usually is |
|---|---|---|---|
| 1 wax · 1 wick · 1 scent · 1 jar | 1 | 3 | The first proven recipe. Guard it |
| 1 wax · 2 wick sizes · 1 scent · 1 jar | 2 | 6 | You are choosing a wick. This is the correct first test |
| 1 wax · 3 wicks · 6 scents · 1 jar | 18 | 54 | A launch range on one wax and one vessel |
| 3 waxes · 3 wicks · 6 scents · 1 jar | 54 | 162 | An ordinary small brand a year in |
| 3 waxes · 3 wicks · 6 scents · 2 jars | 108 | 324 | The same brand after it adds a votive size |
| 4 waxes · 4 wicks · 8 scents · 3 jars | 384 | 1,152 | A range that has grown faster than its records |
Nobody sane runs 324 test jars. The point of the table is not to make you test everything — it is to stop you believing that a recipe validated on one combination transfers to the others for free. It does not, and the next section is about exactly why not.
What changes when each input moves
This is the mechanical heart of the subject. For each input, here is what physically changes, what tends to fail when the change goes untested, and the specific observation that catches it. Read the row for whatever you are about to change; if you are about to change two rows at once, read the fail-fix underneath first.
| Change this | What physically changes | What tends to fail | The observation that catches it |
|---|---|---|---|
| Wax | Melt point, pool temperature, viscosity, crystal structure, adhesion to glass, stated oil ceiling and stated pour band | Wet spots, frosting, tunnelling, a pool that never reaches the wall, weak hot throw | Three jars, same wick, same oil, same jar; time to full pool at day 14 |
| Wick size | Pool diameter and therefore releasing area; burn rate; flame height; pool depth | Too small: tunnelling and a cold, quiet candle. Too large: soot, mushrooming, an overheated vessel, wax consumed too fast | Time to a full pool over three sessions; pool depth; soot on the glass; the wick tip after burn three |
| Wick type (cotton, eco, wooden) | Capillary feed rate, flame shape and stability, how the wick behaves as the pool deepens | Drowning in a fluid pool, self-extinguishing, uneven consumption | Relight behaviour at the start of session two and three, not session one |
| Fragrance | Composition and volatility of 8–13% of the fuel; viscosity of the melt; vanillin content; how much of the scent sits in heavy base notes | Weak hot throw at an identical load, wick drowning, browning in white wax, a pool that behaves differently | A two-oil swap test against your existing recipe as the control |
| Load % | The share of the melt that is oil rather than wax — 16 g against 26 g in a 200 g candle | Above the wax's solubility limit: separation, sweating, a wick starved of wax | Three loads side by side; surface at day 14; wick behaviour in session two |
| Vessel diameter | Pool area: 22.1 cm² at 5.3 cm, 28.3 cm² at 6 cm, 38.5 cm² at 7 cm, 44.2 cm² at 7.5 cm, 78.5 cm² at 10 cm | The previous wick is now wrong in both directions depending which way you moved | Re-wick from scratch at each diameter. This is not a tweak |
| Vessel material and wall | Heat retention and how quickly the outer edge of the pool gives up heat — glass, ceramic and tin all differ | Glass running hot, a ceramic jar holding heat and widening the pool, a tin cooling fast at the rim | Touch the vessel at 60 minutes and again at burn end; record both |
| Season and workshop temperature | Cooling rate after the pour, surface finish, how the cured wax behaves at 34°C on a shelf | Wet spots and sinkholes in winter, sweating and soft tops in an Indian summer | Re-run your best-seller once in peak summer and once in winter and log the ambient temperature |
The standard burn test
This is a protocol, not a result: it describes what to do and what to record, and every number it produces will be yours, not ours. Run it the same way every time and your records become comparable across months, which is the whole point.
The record sheet
A test without a record is a pleasant evening with a candle. Below is the sheet — seventeen fields, one side of A4, the same every time. Copy it into a notebook or a spreadsheet; the format matters far less than filling it in while the candle is in front of you. The example column is a worked entry so the shape is obvious, and every figure in it is a real CSI stated figure or a real listed price.
| # | Field | Why it is on the sheet | Example entry |
|---|---|---|---|
| 1 | Test ID | So a jar on a shelf can be traced to a sheet six months later | BT-2609-A1 |
| 2 | Date poured | Starts the cure clock; also dates the batch of every material | 14 September 2026 |
| 3 | The one question | Forces a single variable | Does Eco C1 open a full pool in the 7 cm jar? |
| 4 | Wax and pack size | The first axis. Pack size matters because it dates the material | Luxury Soy Wax Chunks, 10 kg (₹5,999) |
| 5 | Fragrance and size | The third axis, plus the bottle you will have to match next time | Lavender Fragrance Oil, 1 kg (₹5,221) |
| 6 | Load: percentage AND grams | Grams are reproducible; percentages get mis-read | 8% of candle = 138 g wax + 12 g oil |
| 7 | Basis of the percentage | Two conventions exist in this trade and they differ by about a point | Share of finished candle (not of wax weight) |
| 8 | Wick type and size | The second axis | Eco Candle Wicks, Thin (C1), ₹5.90 each |
| 9 | Vessel and stated diameter | Pool area is set here, and it is the figure most often missing | Clear Glass Jar with Golden Lid, 7 cm outer rim, 150 g fill |
| 10 | Add temperature and stir time | Incorporation quality; also the figure the wax page states | 85°C, stirred 2 minutes |
| 11 | Pour temperature | Surface finish and glass adhesion | 75°C (page states 70–80°C) |
| 12 | Workshop temperature and season | Explains wet spots, sinkholes and summer softness | 31°C, monsoon, humid |
| 13 | Cure: start, end, days | Makes verdicts comparable across months | 14 Sep to 28 Sep, 14 days |
| 14 | Cold throw, lid off, before lighting | The shelf test your customer performs in a shop | 4 / 5 |
| 15 | Per session: time to full pool, pool depth, flame, soot, wick tip | The actual data. Three rows, one per session | S1 2 h 40 min to glass, 8 mm, no soot, slight curl |
| 16 | Hot throw at 1 m and 3 m, 45–60 min in | The commercial question, asked at two distances | 4 / 5 at 1 m, 3 / 5 at 3 m |
| 17 | Verdict and the one change | Turns an evening into a decision | PASS. Next: same jar, Thick C2, to compare pool time |
What one untested combination costs
Price a real production run and the case makes itself. Take 500 candles of 150 g at an 8% load — 138 g of wax and 12 g of oil each — in a vessel whose page states both its fill capacity and its diameter, with an in-stock wick. Every figure below is a listed pack price, so this is what the materials actually cost, not a per-gram abstraction.
| Material | Quantity needed | Listed packs used | Cost |
|---|---|---|---|
| Luxury Soy Wax Chunks | 69 kg (500 × 138 g) | 6 × 10 kg + 1 × 5 kg + 4 × 1 kg | ₹41,385 |
| Lavender Fragrance Oil | 6 kg (500 × 12 g) | 6 × 1 kg at ₹5,221 | ₹31,326 |
| Eco Candle Wicks Thin (C1) | 500 wicks | 1 × 500-wick pack | ₹2,950 |
| Clear Glass Jar with Golden Lid | 500 jars | 25 × pack of 20 at ₹1,888 | ₹47,200 |
| Total materials | 500 candles | — | ₹1,22,861 (₹245.72 each) |
| The nine-jar test that precedes it | 9 jars, same vessel | Wax, oil, 5 × C1, 4 × C2, 9 jars | ₹2,224.69 — 1.81% of the run |
Now the failure modes, priced. If the wick is one size too small, the candles tunnel: the customer burns perhaps 60% of a candle they paid full price for, you take the complaints, and the ₹47,200 of glass is the part you cannot recover. If the wick is one size too large, you get soot on the inside of the jar and a candle that consumes itself fast — the same glass, the same fragrance cost, a shorter burn and a worse review. If the oil browns a white wax you did not test it in, the fault is cosmetic, total and visible in every photograph. None of those outcomes is exotic. Each is the ordinary consequence of assuming a combination rather than burning it, and each costs multiples of ₹2,224.69.
Collapsing 54 tests into 14
Here is the practical resolution of the combinatorics problem. You do not test every combination; you test each axis once, in an order that lets each answer carry forward. Four rounds, fourteen jars, one shelf fully characterised.
Three plus six plus two plus three is fourteen jars. At 150 g each in the production vessel that programme costs ₹3,480.70 — 1,932 g of wax (₹1,157.27 at the 1 kg rate), 168 g of oil (₹877.13), fourteen jars (₹1,321.60) and a mixed handful of wicks (₹124.70), or about ₹248.62 per test jar. Against a single ₹1,22,861 production run that is 2.83%, and it characterises a shelf that contains 108 theoretical combinations. This is the best-value spend in a candle business, and it is not close.
The three axes, priced
A test programme needs one of each axis and a vessel with published dimensions. These are the three products the arithmetic above is built on, with every listed size and what each one costs inside a 150 g candle at 8%.
| Size | Price | Per kg | 150g candles @ 8% |
|---|---|---|---|
| 500 g | ₹299 | ₹598 | ≈3 |
| 1 kg | ₹599 | ₹599 | ≈7 |
| 5 kg | ₹2,995 | ₹599 | ≈36 |
| 10 kg | ₹5,999 | ₹599.90 | ≈72 |
| Size | Price | Per piece |
|---|---|---|
| Thin (C1) / 10 Wicks | ₹59 | ₹5.90 |
| Thick (C2) / 10 Wicks (sold out) | ₹94.40 | ₹9.44 |
| Thin (C1) / 20 Wicks | ₹118 | ₹5.90 |
| Thick (C2) / 20 Wicks | ₹188.80 | ₹9.44 |
| Thin (C1) / 50 Wicks | ₹295 | ₹5.90 |
| Thick (C2) / 50 Wicks | ₹472 | ₹9.44 |
| Thin (C1) / 100 Wicks | ₹590 | ₹5.90 |
| Thick (C2) / 100 Wicks | ₹944 | ₹9.44 |
| Thin (C1) / 500 Wicks | ₹2,950 | ₹5.90 |
| Thick (C2) / 500 Wicks | ₹4,720 | ₹9.44 |
| Thin (C1) / 1000 Wicks | ₹5,900 | ₹5.90 |
| Thick (C2) / 1000 Wicks | ₹9,440 | ₹9.44 |
| Size | Price | Per piece |
|---|---|---|
| Pack of 10 | ₹120 | ₹12 |
| Pack of 50 | ₹600 | ₹12 |
| Pack of 100 | ₹1,200 | ₹12 |
| Pack of 500 | ₹6,000 | ₹12 |
| Pack of 1000 | ₹12,000 | ₹12 |
CANDLEMAKINGSUPPLIESINDIA supplies raw materials, not finished candles, and a guide that tells you to pour fourteen test jars instead of five hundred production candles is not the commercially convenient thing to write. We write it because the failure mode we see most often is not a bad material — it is a good material used in an untested combination, and a maker who loses ₹47,200 of glass to a tunnelling wick usually stops ordering anything at all.
Every price, pack size and specification here comes from live CSI stock in September 2026 and links to the product page, which is always authoritative on current pricing. Stated loads, temperatures and cure windows are quoted only where a product page states them, and where a page states nothing — the Eco Candle Wicks page gives no diameter guidance, and several waxes state no maximum load — we say so rather than filling the gap. No burn-test result on this page is a CSI result. Everything described here is a protocol for producing your own numbers; the times, pool depths and scores in the example record sheet are illustrative entries showing the shape of a filled-in sheet, not measurements we are publishing.
For bulk pricing on wax, wicks and jars for a production run, GST invoicing, or MSDS and IFRA documentation on a fragrance, message us on WhatsApp at +91 7397976926.
Frequently asked questions
- Can changing fragrance oil change the way a candle burns?
- Candle fragrance oil safety guide for professional candle makers
- How to compare two fragrance oils using a controlled burn test
- Best wick for candle making: a guide by diameter
- Why is my candle tunnelling? Diagnosis and fixes
- Why is my candle wick mushrooming?
Customer reviews: The six reviews at the top of this page are genuine, published Judge.me reviews left by CSI customers on their product pages. Names, star ratings, dates and products are as recorded by Judge.me; one longer review is shortened with an ellipsis and otherwise unedited.
Figures verified September 2026: Prices — Luxury Soy Wax Chunks 500 g ₹299, 1 kg ₹599, 5 kg ₹2,995, 10 kg ₹5,999; Lavender Fragrance Oil 15 g ₹105.02, 50 g ₹270, 100 g ₹540, 500 g ₹2,620, 1 kg ₹5,221; Eco Candle Wicks Thin (C1) ₹59 / 10, ₹118 / 20, ₹295 / 50, ₹590 / 100, ₹2,950 / 500, ₹5,900 / 1,000 (₹5.90 each), Thick (C2) ₹188.80 / 20 to ₹9,440 / 1,000 (₹9.44 each; the 10-wick Thick pack is sold out); Cotton Braided Wicks Ready Made ₹120 / 10 to ₹12,000 / 1,000 (₹12 each); Clear Glass Jar with Golden Lid pack of 10 ₹944 and pack of 20 ₹1,888 (₹94.40 each); Pen Thermometer ₹354; Candle Making Weighing Scale ₹354. Stated specifications as published: Luxury Soy Wax Chunks 8–13% fragrance load with 10% recommended, add at 80–90°C, pour 70–80°C, cure minimum 48 hours and ideally 1–2 weeks; Luxury Soy Wax CSI 464 up to 10%, page states melt and pour 80–90°C; Premium Coconut Soy CSI 468 up to 13%, melt 50–53°C, pour 58–60°C; Eco Soy CSI 400 add fragrance at 80–90°C (85°C) and stir 2 minutes; Clear Glass Jar with Golden Lid 150 g fill capacity, height 8 cm, outer diameter 7 cm, base diameter approximately 6.5 cm, safe for hot pour up to 85°C; Cotton Braided Wicks Ready Made "engineered for large-diameter candles exceeding 8 cm", "Height of the wick is 10.16 cm."; Eco Candle Wicks page states no wick diameter or jar-diameter guidance. Fragrance page quotes: Jasmine Fragrance Oil "Vanillin content 0%"; Vanilla Bean Fragrance Oil "Vanillin Content: 2.5%". Loads are wax formulation limits, not regulatory limits. Maths assumptions: fragrance load stated as a share of the finished candle, so a 150 g candle at 8% = 138 g wax + 12 g oil and a 200 g candle at 8% = 184 g wax + 16 g oil; 500-candle run = 69 kg wax (6 × 10 kg + 1 × 5 kg + 4 × 1 kg = ₹41,385) + 6 kg oil (6 × 1 kg = ₹31,326) + 500 wicks (₹2,950) + 500 jars (25 × ₹1,888 = ₹47,200) = ₹1,22,861, or ₹245.72 per candle; nine-jar test = 1,242 g wax at ₹0.599/g (₹743.96) + 108 g oil at ₹5.221/g (₹563.87) + 9 jars (₹849.60) + 5 × C1 (₹29.50) + 4 × C2 (₹37.76) = ₹2,224.69 = 1.81% of the run; fourteen-jar programme = 1,932 g wax (₹1,157.27) + 168 g oil (₹877.13) + 14 jars (₹1,321.60) + wicks (₹124.70) = ₹3,480.70 = 2.83% of the run, ₹248.62 per jar; three-jar test with Eco C1 = ₹736.84. Pool areas are πr² from page-stated diameters. Prices and availability change — the linked product pages are always authoritative.