My New Jar Has Thicker Glass and the Wax Cools Differently — Should I Retest Pouring Temperature?
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How hot can I go? Inside both pages: Chunks' spec table says 75–80°C and the Clear 150 g jar states hot pour up to 85°C. So test 75, 78 and 80°C.
Should I warm the jars? Only if no pour rung passes. Test warmed glass at a measured, recorded temperature against room-temperature glass at the same pour.
What does the retest cost? ₹5,316.04 in CSI materials for all three rounds, or about ₹250.16 per extra jar. See the kit.
Yes — but prove it is the glass first, then retest a very small window
When a candle that behaved in one jar starts to look patchy in another, the new glass is the obvious suspect and the wax is the expensive one. Thicker glass is commonly described as changing two things at once: a cold, heavy wall can draw heat out of the first layer of wax faster than a thin wall does, and once warm it can hold that heat and slow the later cooling. Both can change how the wax sets against the glass. That is a reason to retest the pour, not a proven cause of your wet spots — so the first job is to confirm the jar is really what changed.
The single cheapest test is a split pour: one batch, one pour temperature, poured into three of your old jars and three of the new jars, cooled side by side in the same spot, photographed at the same checkpoints. It costs you six candles and one afternoon. If both sets come out the same — both clean or both spotted — the jar is not your problem and something else changed at the same time: the season, the room, the wax lot or your cleaning. The jar-supplier-change post and the small-production-test post handle that branch. If the new jars are clearly worse, the jar is implicated and the pour-temperature retest below is the next step.
The worked example on this page is the series default: a 150 g candle at 8% in CSI's Clear Glass Jar with Golden Lid (150 gram) — 12 g of Bergamot Amber and 138 g of Luxury Soy Wax Chunks — replacing a Yankee Glass Jar 130 ml that the maker had been filling to a weighed 110 g (an illustrative figure; CSI does not publish the Yankee jar's fill weight, so weigh yours). CSI's product page describes the 150 g jar as "thick-walled" and states it is "safe for hot pour up to 85°C". It does not publish a glass thickness in millimetres, and neither does any page for the Yankee jar, so the comparison of the two walls is your measurement, not ours.
| What can change | Why it is commonly described | The single test | Cost beyond materials you hold |
|---|---|---|---|
| Heat drawn from the first wax layer | A cold thick wall is a bigger heat sink at the moment of pouring | Split pour, old vs new jar, same pour temperature | ₹0 — six jars from one batch |
| How long the jar stays warm | Once warm, more glass holds heat longer and can slow cooling later | Log the jar-side temperature by touch-free method (non-CSI example tool) or simply time to set | ₹0 if you only time it |
| Which pour temperature works | The wax–glass temperature gap at the pour changes | Pour ladder 75 / 78 / 80°C in the new jar | ₹1,500.97 for six extra jars |
| Whether warming the glass helps | Warmer glass narrows the gap without a hotter wax | Room glass vs measured warm glass, same pour | ₹1,500.97 for six jars |
Measure the glass before you argue about it: the glass-to-wax ratio
"Thicker glass" is usually a feeling in the hand. You can turn it into a number with the scale you already use for wax. Weigh an empty old jar and an empty new jar, without lids. Divide each by the weight of wax and oil you put in it. The result — grams of glass per gram of candle — is a rough measure of how much heat sink sits around each gram of hot wax. It is not a thickness and it is not a heat calculation, but it tells you whether the new jar really carries more glass per gram of wax, which is the comparison that matters at the pour.
| Empty jar (example) | Candle fill | Glass per gram of candle | Change | |
|---|---|---|---|---|
| Old jar (Yankee 130 ml, your weighed fill) | 180 g | 110 g | 1.64 g | — |
| New jar (Clear 150 g, page fill ~150 g) | 260 g | 150 g | 1.73 g | +5.9% |
In this illustration the new jar carries 1.73 g of glass for every gram of candle against 1.64 g in the old one — 5.9% more. That is a modest difference, and it shows why the ratio is worth taking: a jar that feels much heavier also holds more wax, so the glass per gram of wax may change far less than the jar weight does. If your own ratio barely moves, thickness is a weak suspect and the split pour will probably show both jars behaving alike. If the ratio rises sharply, the pour-temperature and glass-temperature arms move up your list. The thick-luxury-jar post goes deeper into how a heavier wall can pull heat away; this page stays with the retest decision.
The pour window in this jar is only five degrees wide
Retesting pour temperature sounds like a big job. In practice the window is small, which makes it cheap. CSI's Luxury Soy Wax Chunks page gives a pour temperature of 75–80°C in its spec table (its step list also shows 70–80°C), and fragrance addition at 80–90°C. CSI's Clear Glass Jar with Golden Lid (150 gram) page states the jar is safe for hot pour up to 85°C. So in this jar, with this wax, the pour ladder has exactly three useful rungs: 75°C, 78°C and 80°C. Anything hotter leaves the wax page's own spec; anything above 85°C also leaves the jar's stated limit. We are not saying a hotter pour would help — pouring too hot can create other problems — only that the ladder you test must stay inside both published figures.
If your wax is different, the window moves. Luxury Soy Wax CSI 464's page gives an 80–90°C melt/pour range, so in the 150 g jar its usable pour window is 80–85°C — the jar's limit cuts the top off. Premium Coconut Soy Wax CSI 468's page gives a pour of 58–60°C, far below the jar limit, so its ladder is 58 / 59 / 60°C. For a wax or jar with no published figure, follow the wax maker's and the jar supplier's instructions and ask us on WhatsApp; do not borrow another wax's numbers.
| Wax | Pour figure on its page | Jar limit | Ladder to test in this jar | Rungs |
|---|---|---|---|---|
| Luxury Soy Wax Chunks | 75–80°C (spec table); steps show 70–80°C | 85°C | 75 · 78 · 80°C | 3 |
| Luxury Soy Wax CSI 464 | 80–90°C melt/pour range | 85°C | 80 · 82 · 85°C | 3 |
| Premium Coconut Soy Wax CSI 468 | 58–60°C | 85°C | 58 · 59 · 60°C | 3 |
| Natural Soy Pearl Wax | None published | 85°C | Ask CSI on WhatsApp first | — |
Notice what this does to the question in the title. "Should I retest pouring temperature?" becomes "which of three permitted temperatures is best in my new jar?" That is a one-afternoon test, and the answer is still useful if it is "none of them": it tells you that pour temperature alone cannot rescue this jar–wax pair, and that the next arm should change the glass temperature or the cooling instead. Finding a pour temperature that suits both adhesion and tops covers the trade-off with surface finish, which you should score on the same jars.
The three-round retest, jar by jar
Every round keeps the same wax bag, the same oil bottle, the same 8% load, the same wick from the same pack and the same cleaning routine. Clean every jar the same way before any round — wipe with Isopropyl Alcohol Spray and a lint-free cloth, then let the jars dry completely; isopropyl alcohol is flammable, so keep it away from flame and from the melter, and never warm a jar that is still wet with it. That removes residue as a variable so that only heat is left to explain a difference. Whether new jars need cleaning at all is its own question; here, cleaning is simply held constant.
Why three jars per arm? It is a working practice for a screen, not a statistical rule: three jars let you see whether a result repeats, and they keep the cost low. Each extra jar in this example costs about ₹250.16 in CSI materials (a 150 g jar at the pack-of-10 rate, 138 g of Chunks at the 1 kg rate, 12 g of Bergamot Amber at the 100 g rate and an Eco Thin C1 wick). Going to five jars per arm in round 2 would add ₹1,000.65. Do that when round 2 produces a close call; do not do it by default.
The house scoring sheet
There is no industry standard for an acceptable wet spot, so the scale below is an example house standard. Pick it, write it at the top of the sheet, and keep it for every jar test that follows. The simplest objective measure is area: slip a clear acetate sleeve printed with a 1 cm grid around the jar, count the grid squares that show a dark patch on each of the four marked sides, and add them. A grade from 0 to 4 is quicker and good enough for a screen if the same person grades every jar.
| Jar no. | Arm | Rack position | Pour °C (measured) | Glass °C (if warmed) | 48 h grade / squares | 7 days | After cycle | 30 days | Top finish |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Old jar · 75°C | Row 1, end | ___ | room | ___ | ___ | ___ | ___ | smooth / rough / crater |
| 2 | New jar · 75°C | Row 1, 2nd | ___ | room | ___ | ___ | ___ | ___ | |
| 3 | New jar · 78°C | Row 2, 1st | ___ | room | ___ | ___ | ___ | ___ | |
| 4 | New jar · 80°C | Row 2, 2nd | ___ | room | ___ | ___ | ___ | ___ | |
| 5 | New jar · best °C · warm | Row 3, 1st | ___ | ___ | ___ | ___ | ___ | ___ | |
| Room log | Start ___°C | End ___°C | Fan / AC: on / off | Cooling surface: rack / wood / stone | Wax lot ___ | Oil lot ___ | Jar lot ___ | Cleaning: IPA, dry |
Write your acceptance rule before the first jar is poured — for example, "an arm passes if no jar grades above 1 at 7 days and after the temperature cycle". That figure is your choice, labelled as such; nobody can give you an industry number because none exists. The temperature cycle itself is an example condition: 8 hours warm and 16 hours at room temperature, repeated three to five times, with the warm phase well below CSI 468's stated 50–53°C melting point. Replace it with readings from your own courier route as soon as you have them. The simple temperature-cycle test sets that up.
The priced retest kit
All three rounds, priced with listed in-stock CSI packs. Grams follow the CSI convention (oil = W × L) with a 5% pour-loss working allowance. The old-jar arm uses your own Yankee jars; buy three only if you have none left. The Clear 150 g jar is sold in packs of 10 and 20 at the same per-jar price; the pack of 20 is in limited stock, so confirm on WhatsApp before planning around it.
| Item | Need | Buy | Price | Skip if |
|---|---|---|---|---|
| Clear Glass Jar with Golden Lid (150 gram) | 15 jars | 2 × pack of 10 | ₹1,888.00 | You already hold new jars from the same delivery (better) |
| Luxury Soy Wax Chunks | 2,492.3 g | 2 × 1 kg + 1 × 500 g | ₹1,497.00 | You hold Chunks from your production lot (better) |
| Bergamot Amber at 8% | 216.7 g | 2 × 100 g + 2 × 15 g | ₹1,330.04 | You use your own oil — use the same bottle |
| Eco Candle Wicks Thin C1 (example wick) | 18 + 2 spare | 1 × 20 (10-pack out of stock) | ₹118.00 | You hold your production wick |
| Wick stickers | 18 | 1 × sheet of 40 | ₹100.00 | You hold stickers |
| Isopropyl Alcohol Spray | Every jar, same routine | 1 × 150 ml | ₹383.00 | You already clean with IPA |
| CSI total, rounds 1–3 | ₹5,316.04 | |||
| Yankee Glass Jar 130 ml (old-jar arm) | 3 jars | 3 × single | ₹141.60 | You hold your old jars (normal) |
| With old jars bought | ₹5,457.64 |
The wick line is an example only: CSI does not publish a wick size for the 150 g jar, so use the wick you already burn-tested in it — and if you have not burn-tested a wick in the new jar yet, that is a separate job, because a jar change re-opens the wick check as well as adhesion. A thicker wall can change how hot the jar runs and how the melt pool reaches the glass. Keep that test apart from this one: an adhesion arm and a wick arm poured on the same day are fine, but never in the same jar.
What the answer costs in production
Suppose the retest says the 150 g jar works at 80°C, cold glass. Nothing in your cost changes: the candle still uses 138 g of Chunks and 12 g of oil. At the 5 kg Chunks rate (₹599.00/kg) and the 1 kg Bergamot Amber rate (₹5.44/g), with an Eco Thin C1 wick as the example line and the jar at ₹94.40, the material cost is ₹248.21 a candle before labour, packaging, freight and GST.
Suppose instead it says only warmed glass passes. Now there is a labour line. As an example the reader replaces: if a warming step costs ₹150.00 an hour of someone's time and handles 120 jars an hour, it adds ₹1.25 a candle, plus whatever the non-CSI warming equipment costs you. That is the number to weigh against a wax trial. Whether a wax that removes preheating pays for itself runs that comparison in full; here it is enough to know which side of the line you are on.
| Outcome | What changes | CSI materials / candle | Example extra / candle | Next step |
|---|---|---|---|---|
| Passes at 75–80°C, cold glass | Nothing but the batch-sheet temperature | ₹248.21 | ₹0.00 | Write the temperature into the SOP |
| Passes only with warmed glass | A warming step | ₹248.21 | ₹1.25 (example labour) | Price the step; compare with a wax trial |
| Fails at every rung and warm | Jar–wax pair is not working | ₹248.21 | — | Wax comparison in this jar, or another jar |
The decision rule
Read the sheets from the top and stop at the first line that is true. Each line ends in a purchase or in a process change, so two people reading the same photographs reach the same answer.
| If this is true | It means | Do / buy |
|---|---|---|
| Old and new jars spot equally in round 1 | The jar is not the cause | Nothing. Run the room, cleaning and cooling checks |
| New jar worse; one rung of 75 / 78 / 80°C passes | Pour temperature, re-set for this jar | Nothing new — change the batch sheet; buy production jars |
| No rung passes cold; warmed glass passes | Glass temperature matters in this jar | Price the warming step before any wax |
| Nothing passes, wick and pool fine | This wax–jar pair | Two candidate waxes, same jar, same load — see the comparison method |
| Old jar passes cold, new fails warm | The jar is the weaker vessel for your process | Keep the old jar, or test a frosted alternative |
Notice that a wax purchase appears only on the fourth line, after three rounds of evidence that the heat at the glass face is not the fix. That order matters because a wax change is never just a wax change: it re-opens wick, fragrance load, cure and hot-throw validation. The wax-blend retest post lays out exactly which of your old results survive a formula change, and comparing waxes without changing several variables is the method to use if you reach line four.
Record the new jar as a change, not a swap
Whatever the result, write the jar change down as you would a wax change. A short record saves the next person — or you, next winter — from repeating the investigation. Use the KEEP / CONFIRM / REPEAT / NEW vocabulary: it makes the scope of each check obvious at a glance.
| Earlier result | Status | Why |
|---|---|---|
| Wax choice, oil choice, 8% load | KEEP | The materials did not change; adhesion is retested in the new jar first |
| Fill weight | CONFIRM | The 150 g figure is the page's approximate fill — weigh a pour to your fill line |
| Pour temperature | REPEAT | The ladder on this page, inside 75–80°C for Chunks and the 85°C jar limit |
| Wick and burn results | REPEAT | A different jar can change pool reach and jar heat; no wick chart is published |
| Glass-to-wax ratio, jar weights | NEW | A record you never needed with one jar |
| Photo set at fixed checkpoints | NEW | Your reference for every future jar lot |
Keep three numbered jars from the passing arm, unlit, on a shelf as retained samples, and photograph them again at 30 days. When the next delivery of jars arrives, weigh five and compare the weights with this record. If the jars have changed, you will know before you pour two hundred of them. Why one supplier's glass can behave differently from another's and why a different jar shape can change adhesion are the neighbouring questions.
The CSI products in this retest
| Pack | Price | Per jar |
|---|---|---|
| Pack of 10 | ₹944.00 | ₹94.40 |
| Pack of 20 | ₹1,888.00 | ₹94.40 |
| Pack | Price | Per kg | Jars at 138.0 g wax |
|---|---|---|---|
| 500 g | ₹299.00 | ₹598.00 | 3.62 |
| 1 kg | ₹599.00 | ₹599.00 | 7.25 |
| 5 kg | ₹2,995.00 | ₹599.00 | 36.23 |
| 10 kg | ₹5,999.00 | ₹599.90 | 72.46 |
| Pack | Price | Per gram | Jars at 12.0 g |
|---|---|---|---|
| 15 g | ₹105.02 | ₹7.00 | 1.25 |
| 50 g | ₹280.00 | ₹5.60 | 4.17 |
| 100 g | ₹560.00 | ₹5.60 | 8.33 |
| 500 g | ₹2,718.00 | ₹5.44 | 41.67 |
| 1 kg | ₹5,437.00 | ₹5.44 | 83.33 |
| Pack | Price | Per ml |
|---|---|---|
| 150 ml | ₹383.00 | ₹2.55 / ml |
| 1 litre | ₹520.00 | ₹0.52 / ml |
| Pack | Price | Per jar |
|---|---|---|
| 1 jar | ₹47.20 | ₹47.20 |
CANDLEMAKINGSUPPLIESINDIA supplies raw materials, not finished candles. The easy answer for a supplier is "try another wax". This page keeps your wax, tests the heat at the glass face first, quotes the jar's 85°C limit and the wax page's pour figures as the boundaries, and says plainly that we publish no adhesion data and no glass thickness for any jar.
Oil prices are CSI live pricing, pulled 24 September 2026, stock re-checked 7 October 2026. Chunks, CSI 464 and CSI 468 prices are CSI live pricing, re-checked 7 October 2026; Natural Soy Pearl is CSI live pricing, re-checked 1 October 2026. Jar and IPA-spray prices are CSI live pricing, pulled 7 October 2026; wick prices are re-checked 4 October 2026, including the Eco Thin C1 10-pack being out of stock. Every candle split, per-jar figure, test-kit total and cost-per-acceptable-candle figure on this page is computed and shown to two decimals so you can check it; geometry is labelled illustrative where the dimensions are yours rather than published.
Jar counts per arm, photo checkpoints, glass-warm settings, temperature-cycle conditions, the scoring scale and every acceptance threshold are labelled working practices or your own house standard — no industry figure exists for an acceptable wet spot. The old-jar fill and both empty-jar weights are illustrative — weigh your own. For help building a test kit, bulk quotes, GST invoicing, MSDS or IFRA documents, message us on WhatsApp at +91 7397976926.
Frequently asked questions
- My Wax Works Beautifully in One Jar Supplier's Glass but Poorly in Another Jar with the Same Diameter — Can Glass Composition or Thickness Matter?
- I Changed Jar Suppliers and Suddenly Developed Wet Spots — Should I Validate the New Container Before Changing My Wax Formulation?
- Should Candle Jar Supplier Changes Trigger a Small Production Test Even if Dimensions Remain Identical?
- My New Jar Has the Same Capacity but a Different Shape — Why Might Glass Adhesion Change?
- Should Container Shape Be Included in Wax Qualification Rather than Assuming All 200 g Jars Behave Similarly?
- If I Modify My Wax Blend to Improve Adhesion, Do I Need to Repeat Wick and Fragrance Testing?
- How Do I Choose a Container Wax Using Glass Adhesion, Fragrance Compatibility, Frosting, Hot Throw, Burn Quality and Indian Climate Stability Together?
- My Thick Luxury Jar Has More Wet Spots than My Thin Test Jar — Could the Glass Be Pulling Heat Away Differently?
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 7 October 2026: Bergamot Amber Fragrance Oil ₹105.02 / 15 g, ₹280.00 / 50 g, ₹560.00 / 100 g, ₹2,718.00 / 500 g, ₹5,437.00 / 1 kg. Waxes — CSI live pricing, re-checked 7 October 2026 (Natural Soy Pearl re-checked 1 October 2026): Luxury Soy Wax Chunks ₹299.00 / 500 g, ₹599.00 / 1 kg, ₹2,995.00 / 5 kg, ₹5,999.00 / 10 kg; Luxury Soy Wax CSI 464 ₹260.00 / 500 g, ₹507.40 / 1 kg, ₹2,537.00 / 5 kg, ₹5,074.00 / 10 kg; Premium Coconut Soy Wax CSI 468 ₹325.00 / 500 g, ₹650.00 / 1 kg, ₹3,185.00 / 5 kg, ₹6,370.00 / 10 kg; Natural Soy Pearl Wax ₹450.00 / 1 kg, ₹2,124.00 / 5 kg, ₹4,248.00 / 10 kg, ₹21,240.00 / 50 kg. Jars and accessories, CSI live pricing, pulled 7 October 2026: Clear Glass Jar with Golden Lid (150 gram) ₹944.00 / 10, ₹1,888.00 / 20 (pack of 20 in limited stock); Borosilicate Glass Jar 600 gram ₹200.00 each (limited stock); 200 ml Salsa Glass Jar ₹200.60 / 5, ₹1,475.00 / 50, ₹2,950.00 / 100; Yankee Glass Jar 130 ml ₹47.20 each; Mini Glass Jars 40 ml (black lid) ₹129.80 / 5, ₹634.25 / 25, ₹1,180.00 / 50, ₹2,124.00 / 100; White Matte Glass Jar ₹354.00 / 5, ₹708.00 / 10; Isopropyl Alcohol Spray ₹383.00 / 150 ml, ₹520.00 / 1 litre. Wicks re-checked 4 October 2026: Eco Candle Wicks Thin C1 ₹118.00 / 20, ₹295.00 / 50, ₹590.00 / 100, ₹2,950.00 / 500, ₹5,900.00 / 1000 (10-pack out of stock); Eco Candle Wicks Thick C2 ₹94.40 / 10, ₹188.80 / 20, ₹472.00 / 50, ₹944.00 / 100, ₹4,720.00 / 500, ₹9,440.00 / 1000; Cotton Braided Wicks Ready Made ₹120.00 / 10, ₹600.00 / 50, ₹1,200.00 / 100, ₹6,000.00 / 500, ₹12,000.00 / 1000; wick stickers ₹100.00 / 40. Tools: Candle Making Weighing Scale ₹354.00; Pen Thermometer ₹354.00 (measures wax, not glass).
Non-price figures and assumptions: Load convention: fragrance load is a share of the finished candle (oil = W × L; wax = W × (1 − L)). Series default candle: 150 g at 8% (12 g oil + 138 g wax) in the Clear 150 g jar. Illustrative: old Yankee jar fill 110 g; empty jar weights 180 g and 260 g. Working practices: 3 jars per arm, 5% pour loss, photo checkpoints at pour day, 48 hours, 7 days, after a temperature cycle and 30 days, glass-warm example 35–45°C, temperature-cycle example 8 h warm / 16 h room for 3–5 cycles, warming-step example labour ₹150.00/hour at 120 jars/hour. Production cost uses the 5 kg wax and 1 kg oil rates; Eco Thin C1 is an example wick line. What CSI's product pages state (quoted, not CSI test results): Luxury Soy Wax Chunks — maximum fragrance load 13%, fragrance addition 80–90°C, pour 75–80°C in the spec table (the step list also shows 70–80°C), stir 2 minutes, cure minimum 48 hours, ideally 1–2 weeks, and "excellent adhesion to glass and container surfaces reduces wet spots and pull-away"; Luxury Soy Wax CSI 464 — fragrance load up to 10%, an 80–90°C melt/pour working range, "excellent glass adhesion", single-pour, low frosting; Premium Coconut Soy Wax CSI 468 — melting point 50–53°C, pour 58–60°C, fragrance load up to 13%, "formulated for excellent glass adhesion and a one-pour finish"; Natural Soy Pearl — no fragrance ceiling, temperature, cure or adhesion statement published. Clear Glass Jar with Golden Lid (150 gram) — thick-walled clear glass, approximately 150 g wax fill, about 8 cm tall with lid, rim about 7 cm, base about 6.5 cm, "safe for hot pour up to 85°C". All three wax pages make the same adhesion claim, so the claim cannot rank them. CSI publishes no adhesion, wet-spot, shrinkage, contraction or frosting data for any wax, oil, dye or jar, no glass thickness in millimetres, no internal jar diameters and no wick-size-per-jar chart; no industry acceptance threshold for wet spots exists. Mechanisms (wax contraction as it cools and crystallises, glass temperature, cooling rate, residues, temperature cycling, load and dye effects) are general candle-making knowledge, phrased as commonly described. Material costs exclude labour, packaging, freight and GST. Diwali 2026 falls on Sunday 8 November.