I Corrected a Sweating Batch by Adding Wax — Do I Need to Repeat Complete Wick Testing Because the Fragrance Percentage Changed?
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I Corrected a Sweating Batch by Adding Wax — Do I Need to Repeat Complete Wick Testing Because the Fragrance Percentage Changed?
Do I need to re-test every wick size? No. Bracket the answer: the wick you approved before, plus the next CSI option either side. That is usually enough to confirm or move the choice.
Can I test with one burn? One burn shows the first melt pool only. Problems such as tunnelling, mushrooming or a hot jar near the bottom appear later, so burn test candles through to the end.
Can I pour the batch while the wick test runs? Pour the pilot, not the batch. A batch poured with the wrong wick is a second rework. Hold the diluted wax, covered and labelled, until the bracket test gives an answer.
Why a load change reopens the wick question
You fixed the sweating. The batch was remelted, unscented wax was added, and the load came down from 10% to 8% of the candle. Same jar, same wax, same oil. It is tempting to treat the wick as settled, since nothing about the jar changed. The trouble is that the wick does not burn the jar. It burns what is in it.
Fragrance oil is part of that fuel. A 200 g candle at 10% held 20 g of oil in 180 g of wax; at 8% it holds 16 g in 184 g. The wick is now drawing a mixture with less oil and more wax. How that changes the burn depends on the oil and wax, and no general rule tells you in advance which way it will go. Some candles burn almost identically. Others form the melt pool more slowly, or the flame and soot behave differently, or a jar that ran hot near the bottom now runs cooler.
CSI publishes no wick sizing chart, flame height, burn rate or melt-pool diameter for any wick, and no burn-time figure for finished candles. That is not a gap you can fill from a table. It is filled by burning your candle.
Bracket the answer instead of restarting
A complete wick search tests every plausible size from scratch. You do not need that. You already know the wick that suited this jar and wax at 10%, so the answer at 8% is almost certainly that wick or one step away from it. Bracketing tests exactly those options.
CSI does not sell a numbered wick ladder, so the steps are fewer and larger than in some ranges. The honest map is Eco C1 (thin), Eco C2 (thick), Cotton Braided Wicks Ready Made (positioned on its page for candles wider than 8 cm), two wicks in one jar as a configuration, and Performance Wooden Wicks as a different construction. If the right wick falls between C1 and C2, the range may not contain it, and the answer may be a configuration or a small change in jar or load instead.
Example: a 7 cm matte jar
Take an illustrative case. A maker pours 200 g candles in CSI's 200 ml matte glass jars, which the page describes as about 7 cm wide and 8 cm tall. The melt surface of a 7 cm jar is roughly π × 3.5² ≈ 38.5 cm², though the internal diameter is a little less than the outer width. At 10% in CSI 464 with Lavender, Eco C2 was approved. After the rework to 8%, the bracket is:
Samples for that bracket cost an Eco C1 20-pack at ₹118.00 plus an Eco C2 10-pack at ₹94.40: ₹118.00 + ₹94.40 = ₹212.40. Ready-made braided wicks are positioned for candles wider than 8 cm, so for a 7 cm jar they are a later option, not part of the first bracket.
What to record, burn by burn
Pour all eight candles from the same diluted wax on the same day, cure them for at least the oil page's stated minimum, and burn them in the same draught-free room. Session lengths and checkpoints below are suggested starting points; keep them the same for every candle.
| Checkpoint | What to look for | Eco C2 (approved) | Eco C1 | Two Eco C1 |
|---|---|---|---|---|
| First burn, end of session | Melt pool reaching the jar wall, or a ring of unmelted wax | |||
| Flame during each session | Steady flame, no flaring, no smoking | |||
| Wick head after each session | Carbon mushrooming | |||
| Glass after each session | Soot on the rim or walls | |||
| Middle of the candle | Tunnelling starting, melt pool depth | |||
| Last part of the candle | Glass running hot, flame growing, wick drowning | |||
| Between burns | Any oil on the re-hardened surface |
Never leave a test burn unattended, keep the candles away from draughts and anything flammable, and let the glass cool fully between sessions.
Reading the bracket
Notice that none of the outcomes is 'put the oil back to 10%'. The candle was reworked because 10% sweated. A wick problem at 8% is solved with the wick or the jar, not by restoring the load that failed.
What the retest costs against a second rework
The bracket test uses wax you already have: the eight test candles are poured from the diluted batch itself, so no new wax or oil is bought. The new spend is small. The two wick packs cost ₹212.40. If you do not reuse cleaned jars from the original batch, one pack of ten matte jars is ₹708.00, so the outlay is ₹212.40 + ₹708.00 = ₹920.40, excluding shipping and GST. Two of those ten jars are spares for a repeat if one test candle is spoiled.
Set that beside the alternative. A batch of 250 candles poured with a wick that turns out to run hot near the bottom cannot be sold, and recovering it means releasing the wax from 250 jars, discarding 250 wicks and starting the cure again. The arithmetic of the rework was correct; it is the untested wick that would sink it.
Time is the real cost: cure plus burn-down takes days, not hours. Plan the order date around it, and tell the customer early if the corrected batch needs the extra week rather than shipping a candle that has only passed half its test.
How complete does the testing need to be?
Complete enough to cover the whole life of the candle, for every wick option you might use, in the jar and load you will sell. That is less than a full wick search, but more than one evening's burn.
Keep one candle of the winning option back from the burn test for a storage check, in normal conditions and in your own supervised warm room or cabinet if you sell into hot regions. The point of the rework was a dry candle; the wick test confirms the candle burns, and the storage check confirms it stays fixed.
Then write the result down as a formula specification: wax, oil, load on its stated basis, jar, wick, cure and the date the combination was approved. The next time anyone changes the load, the specification will make the need for a wick retest obvious.
Where this page fits
CSI already has guides that cover parts of this question. This page answers one sweating decision; these cover the neighbouring questions:
Three things to buy for this fix
| Option | Price | Status on the October 2026 pull |
|---|---|---|
| Thin (C1) × 10 | ₹59.00 | Out of stock |
| Thin (C1) × 20 | ₹118.00 | In stock |
| Thin (C1) × 100 | ₹590.00 | In stock |
| Thin (C1) × 500 | ₹2,950.00 | In stock |
| Thin (C1) × 1,000 | ₹5,900.00 | In stock |
| Thick (C2) × 10 | ₹94.40 | In stock |
| Thick (C2) × 20 | ₹188.80 | In stock |
| Thick (C2) × 100 | ₹944.00 | In stock |
| Option | Price | Status on the October 2026 pull |
|---|---|---|
| Pack of 10 | ₹120.00 | In stock |
| Pack of 50 | ₹600.00 | In stock |
| Pack of 100 | ₹1,200.00 | In stock |
| Pack of 500 | ₹6,000.00 | In stock |
| Pack of 1,000 | ₹12,000.00 | In stock |
| Option | Price | Status on the October 2026 pull |
|---|---|---|
| Pack of 5 | ₹354.00 | In stock |
| Pack of 10 | ₹708.00 | In stock |
CANDLEMAKINGSUPPLIESINDIA supplies raw materials and production equipment, not finished candles. This guide separates general formulation practice from what CSI's own product pages state, converts the pages' wax-weight loads to the total-weight basis used here, says plainly where CSI publishes no figure (wax heat resistance, survival temperatures, oil composition beyond the page), and labels every load step, test temperature, observation day or reject rate as a starting point for your own validation.
Prices are live CSI prices from October 2026; product pages are authoritative. Where a spec is not published — such as the temperature at which a wax starts to release oil — this guide says so rather than filling the gap.
For bulk quotes, GST invoicing, IFRA and MSDS documents, message us on WhatsApp at +91 7397976926.
Frequently asked questions
- My Reworked Candle No Longer Sweats but Hot Throw Is Weaker — Should I Test a Better-Performing Fragrance Instead of Increasing the Load Again?
- My Reworked Candle Is Stable but Now Tunnels — Could the Lower Fragrance Load Have Changed Wick Behaviour?
- How Many Reworked Test Candles Should I Validate Before Remelting an Entire 500-Unit Batch?
- When Is It Financially Better to Scrap a Sweating Candle Batch Rather Than Spend Labour and Energy Reprocessing It?
- How Do I Calculate the Cost of Remelting, Additional Wax, Labour, Jars and Retesting Before Deciding Whether a Failed Batch Is Worth Rescuing?
- My Fragrance Continues Separating Even at a Lower Load — When Should I Stop Trying to Rescue the Formulation and Replace the Fragrance Oil?
- My Fragrance Performs Well but My Wax Cannot Keep It Stable During Indian Summer — When Should I Replace the Wax Instead?
- I Found a New Wax That Fixes the Sweating Problem — What Other Tests Must I Complete Before Buying 25–100 Kg for Production?
- My Candle Has Great Cold Throw but Weak Hot Throw, Sweating and a Drowning Wick — Could All Three Problems Be Caused by Excessive Fragrance Load?
- When Changing Fragrance Oil, What Should I Retest: Percentage, Hot Throw, Cold Throw, Wick Behaviour, Discolouration, Sweating, Storage Stability and Full-Life Combustion?
Customer reviews: The reviews at the top are genuine, published Judge.me reviews — Ashwini (5★, not recorded as verified); Jinal Monil (4★, verified); Subhankar Roy (4★, verified); Arminder Kaur (5★, verified); Renam Dhoundiyal (4★, verified); Shivalik Manak (5★, verified). Names, ratings, dates and products as recorded by Judge.me.
Product facts (October 2026, CSI live store): Eco Candle Wicks: Thin (C1) × 10 ₹59.00 (out of stock), Thin (C1) × 20 ₹118.00, Thin (C1) × 100 ₹590.00, Thin (C1) × 500 ₹2,950.00, Thin (C1) × 1,000 ₹5,900.00, Thick (C2) × 10 ₹94.40, Thick (C2) × 20 ₹188.80, Thick (C2) × 100 ₹944.00 — natural cotton and paper fibres · ₹5.90 (C1) and ₹9.44 (C2) per wick at every pack size · no dimensions or burn chart published. Cotton Braided Wicks Ready Made: Pack of 10 ₹120.00, Pack of 50 ₹600.00, Pack of 100 ₹1,200.00, Pack of 500 ₹6,000.00, Pack of 1,000 ₹12,000.00 — pre-tabbed · ₹12.00 each · page positions them for candles wider than 8 cm · wick height 10.16 cm. Matte / Frosted Glass Jar (200 ml): Pack of 5 ₹354.00, Pack of 10 ₹708.00 — page states "fill weight of 200 ml" and "Height 8 cm width 7 cm" (outer size); several colours, some out of stock.
Assumptions: Fragrance load is a percentage of total candle weight (200 g = 184 g wax + 16 g oil at 8%); CSI wax pages phrase their ceilings as a share of wax weight. CSI wax pages state fragrance loads as a share of wax weight; converted here to total weight with W ÷ (100 + W) (10% of wax = 9.09% of the candle; 13% = 11.50%). A stated maximum is the wax maker's ceiling for typical oils, not a promise for every oil. CSI publishes no wax heat-resistance or survival temperature; every test temperature, observation day, load step, reject rate and labour or energy cost is a suggested starting point or the reader's own figure. Blends with microcrystalline wax, Vybar, paraffin or Soy Pillar Wax are the maker's own to test. Wax prices re-checked 7 October 2026, oil prices 1 October 2026; product pages are authoritative.