When Changing Wick Supplier, What Should I Retest: Flame Height, Melt Pool, Mushrooming, Soot, Hot Throw, Jar Temperature, Consumption Rate and End-Of-Life Behaviour?
Aktie
What can I keep? Everything unlit: fragrance load, cold throw, surface, frosting, sweating and colour in storage. The wick does not affect them.
When is a short CONFIRM enough? When it is exactly the same wick product bought from a different stockist, or for the upper burns after a tab-only change. Any disagreement promotes it to REPEAT.
How many test candles? CONFIRM: 1 new, 1 control, 1 retained (₹1,472.20). REPEAT: 3 new, 3 control, 1 retained (₹2,566.52 with Eco Thin C1). See the counts.
The short answer: all eight — but how hard depends on the change
The title lists eight things: flame height, melt pool, mushrooming, soot, hot throw, jar temperature, consumption rate and end-of-life behaviour. All eight happen only when the candle is lit, and the wick is the component that turns wax and fragrance into flame, so a wick-supplier change puts every one of them in question. What varies is the depth of the retest. Buying exactly the same wick from a different stockist needs a short CONFIRM on each line. A different supplier's "same" wick, a size change or a type change needs a full REPEAT. A tab-only change needs a CONFIRM on the upper burns and a REPEAT at the end. And some changes bring lines you have never tested before — the NEW verdict.
What stays is everything that happens before the candle is lit. The fragrance load, how the oil binds, cold throw, surface finish, frosting, sweating and colour in storage are properties of the wax, the oil, the dye and the jar. The wick does not touch them, so they are KEEP for every wick change on this page. That is where this checklist saves you time: it tells you exactly which results survive, so the effort goes to the eight that do not.
| Line | Same wick, new stockist | Same type, new supplier | One size up / down | Cotton → wooden | Tab only |
|---|---|---|---|---|---|
| Flame height | CONFIRM | REPEAT | REPEAT | REPEAT | CONFIRM |
| Melt pool | CONFIRM | REPEAT | REPEAT | REPEAT | CONFIRM |
| Mushrooming | CONFIRM | REPEAT | REPEAT | NEW | CONFIRM |
| Soot | CONFIRM | REPEAT | REPEAT | REPEAT | CONFIRM |
| Hot throw | CONFIRM | REPEAT | REPEAT | REPEAT | CONFIRM |
| Jar temperature | CONFIRM | REPEAT | REPEAT | REPEAT | REPEAT |
| Consumption rate | CONFIRM | REPEAT | REPEAT | REPEAT | CONFIRM |
| End of life | CONFIRM | REPEAT | REPEAT | REPEAT | REPEAT |
| Load, cold throw, storage appearance | KEEP | KEEP | KEEP | KEEP | KEEP |
| Label burn time | CONFIRM | REPEAT | REPEAT | REPEAT | CONFIRM |
Two changes are not in the grid because they add lines rather than change verdicts. Moving from cotton to wooden wicks puts every combustion line at REPEAT and adds NEW lines — the crackle, how the flame sits on a flat wick, any ember or afterglow after extinguishing, relighting — and mushrooming is replaced by the way carbon builds on a wooden wick; the cotton-to-wooden post covers them. Moving from one wick to two in a wide jar puts everything at REPEAT and adds NEW lines for wick spacing, when the two pools merge and heat between the flames; the one-to-two-wicks post covers those.
The eight lines: how to measure each one
Each line is measured on the new-wick candle and on a control candle made with the approved wick, burned side by side in the same room at the same time. CSI publishes no numeric flame-height or jar-temperature limit and no burn data for its wicks, so the pass condition is always relative: no worse than the control, within your jar supplier's guidance and the fire-safety standard you work to (ASTM F2417 is a commonly cited US candle fire-safety specification; read it yourself if your market uses it).
| Line | How to measure | When | Pass vs control | Common trap |
|---|---|---|---|---|
| Flame height | mm against a ruler held behind the flame | Fixed minute, every burn | No taller | Measuring right after a trim — measure at the same minute |
| Melt pool | Diameter across widest point; depth with a clean skewer; minutes to full pool | 1 h, 2 h, end | Full pool within the burn; depth recorded | Calling 'nearly to the edge' full — see the smaller-flame post |
| Mushrooming | Photograph the wick head at the end of the burn | Every burn | No worse | Judging only early burns; carbon builds up |
| Soot | Rim of the jar; white card held above the flame | Fixed minute | No more | Draughts make any wick soot — control the room |
| Hot throw | Blind 1–5 score in a fixed room | Fixed minute, after cure checkpoint | Scored only after the safety lines pass | Letting throw excuse a hotter burn — see the hotter-jar post |
| Jar temperature | Same instrument, spot and minute; or cooler / same / warmer by hand | Every burn — especially late | No warmer | Reading at a different height each time |
| Consumption rate | (weight before − weight after) ÷ hours | Every burn | Recorded; drives burn time | Forgetting the tare, so leftover cannot be known |
| End of life | Extinction, leftover (final − tare), base check, tab holding | Last burn | No worse; leftover within tolerance | Stopping the test early — see the tab-change post |
How many candles each verdict needs
The verdict decides the size of the test. The counts below are labelled working practice for one fragrance in one jar — the series convention of at least three candles per variant for a full retest, a control made with the approved wick, and a retained unburned control for later production checks. Burn cycles of about 3–4 hours with full cool-down between are a commonly used cycle, also labelled.
| Verdict | New-wick candles | Controls | Retained | Burned to | Used for |
|---|---|---|---|---|---|
| CONFIRM | 1 | 1 | 1 | Full life; compared at burns 1–3 and the last burn | Same wick from a new stockist; tab-only upper burns |
| REPEAT | 3 | 3 | 1 | Full life, every burn logged | Any different wick, size or type |
| NEW — short-burn line | +1 | +1 | — | Full life on short sessions | Checking tunnelling on customer-length burns |
| NEW — shallow-pour end of life | +2 to +3 | +2 to +3 | — | Extinction | Tab and neck changes; fast end-of-life screen |
| NEW — type-specific lines | Within the REPEAT candles | — | — | As the line needs | Wooden-wick crackle and ember; two-wick spacing |
For a range of fragrances on the same wick, multiply sensibly rather than blindly: every fragrance needs its own comparison with a control, but full lives can be concentrated on a bracket of the highest-risk fragrances from your records — the eight-fragrance post prices that plan — and if the wick behaves differently by fragrance type, the lavender-and-vanilla post shows how to screen for it.
The master scoring sheet
One copy per candle per burn. Header: SKU, fragrance and load, wax bag and order date, jar and its measured internal diameter, wick (supplier, product, pack, order date, tab measurements), candle number, arm (new / control), tare weight, cure checkpoint, room, start time.
| Line | Reading | vs control | Pass? |
|---|---|---|---|
| Flame height (mm, minute __) | same / taller / shorter | ||
| Pool diameter at 1 h / 2 h / end (cm) | |||
| Minutes to full pool | |||
| Pool depth (mm, minute __) | |||
| Wall ring (mm) | |||
| Mushrooming (photo no. __) | none / same / more | ||
| Soot (rim, card) | none / same / more | ||
| Jar-side reading (spot __, minute __) | cooler / same / warmer | ||
| Hot throw (blind 1–5) | only after safety lines pass | ||
| Weight before → after (g); hours | g per hour | ||
| Last burn: extinction, leftover (final − tare), base, tab |
The decision rule, in order
| Order | Check | If it fails |
|---|---|---|
| 1 | Flame height, soot, mushrooming, jar temperature, end of life: no worse than control on any burn | Reject — nothing below is scored |
| 2 | Melt pool: full pool within the burn on every burn; no growing wall ring | Reject, or test the next size with its own full life |
| 3 | Hot throw: not clearly weaker than control (blind) | Commercial decision — a weaker, safer candle may still be acceptable; a stronger, hotter one never is |
| 4 | Consumption: recorded; label burn time recalculated | Relabel from measured figures |
| 5 | Cost and supply: saving (if any) survives; wick buyable in your quantities | See the ₹2-per-candle post for payback |
The rule does not average across lines or burns. A wick that is better on seven burns and warmer than the control on the ninth fails line 1. A wick that throws more because it burns hotter fails line 1 before throw is scored. And a CONFIRM that disagrees with its control at any checkpoint is promoted to a REPEAT at once — the short check has done its job by finding the difference.
The priced kits
Both kits use listed, in-stock CSI sizes on the pull dates, with a 5% pour-loss allowance (working assumption), 200 g candles at an 8% load in Luxury Soy Wax Chunks (rated up to 13% by the wax maker) and White Matte Glass Jars (fill weight not published — weigh a test pour). Controls use your approved wick from stock. The new wick is priced four ways so you can see what the wick itself adds.
| Item | Need | Buy | Price |
|---|---|---|---|
| Luxury Soy Wax Chunks | 1,288 g + 5% = 1,352.4 g | 1 × 1 kg + 1 × 500 g | ₹898.00 |
| Neroli Fragrance Oil | 112 g + 5% = 117.6 g | 1 × 100 g + 2 × 15 g | ₹901.52 |
| Eco Candle Wicks Thin C1 | 3 wicks | 1 × 10 | ₹59.00 |
| White Matte Glass Jar | 7 jars | 2 × pack of 5 | ₹708.00 |
| Total | 7 test candles | ₹2,566.52 |
| New wick | 10-pack | Per wick | REPEAT kit total |
|---|---|---|---|
| Eco Candle Wicks Thin C1 | ₹59.00 | ₹5.90 | ₹2,566.52 |
| Eco Candle Wicks Thick C2 | ₹94.40 | ₹9.44 | ₹2,601.92 |
| Cotton Braided Wicks Ready Made | ₹120.00 | ₹12.00 | ₹2,627.52 |
| Performance Wooden Wicks | ₹590.00 | ₹59.00 | ₹3,097.52 |
| Item | Need | Buy | Price |
|---|---|---|---|
| Luxury Soy Wax Chunks | 552 g + 5% = 579.6 g | 1 × 1 kg | ₹599.00 |
| Neroli Fragrance Oil | 48 g + 5% = 50.4 g | 1 × 50 g + 1 × 15 g | ₹460.20 |
| Eco Candle Wicks Thin C1 | 1 wicks | 1 × 10 | ₹59.00 |
| White Matte Glass Jar | 3 jars | 1 × pack of 5 | ₹354.00 |
| Total | 3 test candles | ₹1,472.20 |
| Pack | Price | Per gram | Candles at 16 g |
|---|---|---|---|
| 15 g | ₹118.00 | ₹7.87 | 0.94 |
| 50 g | ₹342.20 | ₹6.84 | 3.12 |
| 100 g | ₹665.52 | ₹6.66 | 6.25 |
| 500 g | ₹3,327.60 | ₹6.66 | 31.25 |
| 1 kg | ₹6,655.20 | ₹6.66 | 62.50 |
| Wick | Smallest pack | Per wick |
|---|---|---|
| Eco Thin C1 | 10 · ₹59.00 | ₹5.90 |
| Eco Thick C2 | 10 · ₹94.40 | ₹9.44 |
| Cotton Braided Ready Made | 10 · ₹120.00 | ₹12.00 |
| Performance Wooden | 10 · ₹590.00 | ₹59.00 (₹41.30 at 100) |
Release, record, and where to go deeper
| Your situation | Read |
|---|---|
| Supplier says their wick is an equivalent size | Equivalent-size claims |
| Moved a size up or down | Size up · Size down, later burns |
| Better throw but a hotter jar | Throw versus heat |
| Smaller flame that reaches the edge eventually | Full life before sizing up |
| Works in some fragrances, not others | Screen by fragrance type · Bracket eight fragrances |
| Already bought thousands; or cheaper by ₹2 | 5,000 wicks bought · Payback |
| Tab changed; or more wax left at the end | Tab change · Tab height and usable life |
| A big order is due | Emergency 1,000-candle order |
If the wick change is one of several changes at once — a new wax as well, say — stop and separate them, testing one change at a time. And the wick-only post covers why storage testing is not normally repeated for a wick change while combustion testing is.
CANDLEMAKINGSUPPLIESINDIA supplies raw materials, not finished candles. This checklist applies to our wicks exactly as to anyone else's: a change to any CSI wick is a REPEAT on all eight lines, and we publish no burn data, tab dimensions or equivalence claims that would let you skip it.
Wax and oil prices are CSI live listings pulled on 24 September 2026; wick and jar prices are those verified for Blog 760 on 10 September 2026, with wick packs rechecked on 25 September 2026. Kit quantities use CSI's load convention (oil = candle weight × load) with a 5% allowance; totals are arithmetic.
The verdict grid, candle counts, 3–4 hour cycles, cure checkpoints and tolerances are labelled working practices for small businesses, not a published standard; ASTM F2417 is named as a commonly cited standard with no figures quoted. For help mapping your SKUs, bulk pricing, GST invoicing, MSDS or IFRA documentation, message us on WhatsApp at +91 7397976926.
Frequently asked questions
- My New Wick Creates Better Hot Throw but Also Heats the Jar More — Should Improved Scent Performance Ever Justify a More Aggressive Burn?
- My Replacement Wick Gives a Smaller Flame but the Candle Still Reaches the Edges Eventually — Should I Evaluate Full-Life Performance Before Sizing up?
- My New Wick Works with Lavender but Not Vanilla — Do I Need to Qualify Replacement Wicks Across Multiple Fragrance Types?
- I Use One Wick Size Across Eight Fragrances — If I Change Wick Supplier, Should I Test All Eight Fragrances Again?
- I Bought 5,000 Replacement Wicks Before Testing Them and Now They Burn Differently — Can I Adjust the Formula or Should I Change the Wick?
- My New Wick Is Cheaper by ₹2 per Candle but Requires More Testing — How Do I Calculate Whether Changing Suppliers Is Financially Worthwhile?
- My Wick Supplier Changed the Tab but Says the Wick Itself Is Identical — Should I Still Check End-Of-Life Candle Behaviour?
- My New Wick Has a Different Tab Height and the Flame Extinguishes with More Wax Remaining at the Bottom — Could the Tab Change Usable Candle Life?
- I Need an Emergency Replacement Wick for a 1,000-Candle Corporate Order — What Tests Are Essential Before Production?
- If I Change Only the Wick, Do I Need to Repeat Long-Term Storage Testing or Mainly Combustion Testing?
Customer reviews: The six reviews at the top of this page are genuine, published Judge.me reviews left by CSI customers on the product pages named on each card — Eco Candle Wicks, Premium Candle Wicking Needle and Bamboo Wick Holder. They are general product reviews, not assessments of the guidance set out here. Names, star ratings, dates and products are as recorded by Judge.me and wording is unedited. "Verified buyer" appears only on the three reviews Judge.me recorded as verified — Monika Deep, Subhankar Roy and Sneha Tamang; the reviews from Ashwini, LJ and Lalitha Jagan are published but not recorded as verified, and carry no badge.
Figures pulled 24 September 2026, CSI live pricing: Neroli Fragrance Oil ₹118.00 / 15 g, ₹342.20 / 50 g, ₹665.52 / 100 g, ₹3,327.60 / 500 g, ₹6,655.20 / 1 kg. Luxury Soy Wax Chunks ₹299.00 / 500 g, ₹599.00 / 1 kg (rated up to 13% fragrance load). Wick, jar and tool figures verified 10 September 2026 (Blog 760), wick packs rechecked 25 September 2026: Eco Candle Wicks Thin C1 ₹59.00 / 10, ₹118.00 / 20, ₹295.00 / 50, ₹590.00 / 100, ₹2,950.00 / 500, ₹5,900.00 / 1,000 (₹5.90 each); Thick C2 ₹94.40 / 10, ₹188.80 / 20, ₹944.00 / 100, ₹9,440.00 / 1,000 (₹9.44 each); Cotton Braided Wicks Ready Made ₹120.00 / 10 up to ₹12,000.00 / 1,000 (₹12.00 each); Performance Wooden Wicks ₹590.00 / 10, ₹2,360.00 / 50, ₹4,130.00 / 100; White Matte Glass Jar ₹354.00 / 5 (₹70.80 each).
Non-price figures and assumptions: CSI convention: fragrance load is a share of the finished candle weight (oil = W × L). The verdict grid, 8% load, candle counts per verdict, 3–4 hour cycles, cure checkpoints, 5% pour loss and tolerances are labelled working practices. CSI publishes no burn results, wick construction details, tab heights, wick size charts or flame-height and jar-temperature limits; ASTM F2417 is named with no figures quoted. The White Matte Glass Jar's fill weight is not published — weigh a test pour. Costs exclude labour, packaging, freight and GST. Prices and availability change — the linked product pages are always authoritative.