I Made the Exact Same Candle Formula as Last Month but This Batch Has Weaker Hot Throw — Which Raw Material Should I Investigate First?
शेयर करना
Then in what order? Records and cure age, then your own oil stock (bottle age, headspace, storage), then the wick pack, then the wax bag, then the jar. That order is editorial judgement, not measured data. CSI publishes no lot or batch data; for the lot numbers on your orders, ask us on WhatsApp.
How do I test it? Put last month's batch and this month's side by side on paper (the diff sheet), then in the room: two retained candles from last month against two from this month, burned on separate evenings once this month's are as old as last month's were when you approved them.
What does that cost? Nothing new: the four candles already exist. In the worked example they carry ₹922.57 of materials (₹230.64 each), 10% of one 40-candle batch, excluding labour, freight, packaging and GST.
- Straight answer: which material first?
- A formula is a recipe; a batch is an event
- Ranked suspects: pattern, cause, rule in or out
- The diff sheet: two batches, row by row
- The retained-candle side-by-side
- What not to buy while you investigate
- What to buy, suspect by suspect
- Map of this cluster: 3261–3280
- Frequently asked questions
A formula is a recipe; a batch is an event
A formula card says Sandalwood, 8%, CSI 464, C1, 150 g jar. A batch adds a dozen or more facts the card never mentions: which bag of wax and how far into it, which bottle of oil and how full, which pack of wicks, what the scale read, the temperature when the oil went in and when the pitcher was poured, how long it was stirred, how warm the room was, and how many days passed before anyone lit a candle. Any one of those can move hot throw. None of them appears on the card, so "same formula" is true and unhelpful at the same time.
That is why the question "which raw material?" usually comes one step too early. A raw material is a suspect only if your records show it changed between the batches. If both batches used the same bag, the same bottle and the same pack, the materials are shared and cannot explain a difference between them; what differed was the process or the calendar. If the records are thin, that is the first finding, and the process-fields post explains which fields would have caught it.
For the formulation side of the same situation (a small test batch that beat a big production batch) see the 20 kg production batch investigation; for the first-level version, worked in a small test, different in bulk. This page is the diagnostic hub for a repeat of the same size that came out weaker.
Ranked suspects: pattern, cause, rule in or out
The table ranks the causes behind a weaker repeat batch in the order we would suspect them, most common first. The ranking is editorial judgement; CSI has no failure statistics. Here the cheapest-to-check order and the most-likely order mostly coincide, because the two commonest suspects (record and cure) are also free to check. Where they part company, as with the jar (cheap to measure, rarely the cause of weaker throw in a repeat), we rank by likelihood and say so.
| # | Pattern you see | Likely cause | Rules it in | Rules it out |
|---|---|---|---|---|
| 1 | This month's batch judged within a few days of pouring; last month's approved later | Cure age at test | Batch B improves by the age at which A was approved | B still weaker at matched age |
| 2 | More candles from the same batch weight, or a different person weighed the oil | Load lower than planned (basis slip, tare, scale) | Candle count, oil used and wax used don't reconcile | Grams on the sheet reconcile with the bottle and the bag |
| 3 | No temperatures logged for B, or a different pot, melter or rush day | Process: add or pour temperature, stir time | B's figures differ from A's, or can't be found | Both batches logged inside the wax page's range with the same stir |
| 4 | Same oil bottle, now half empty, weeks older, kept in a warm room | Own oil stock aged in use | A sealed sample kept from the first pour smells different from the bottle now | The bottle still smells like the sealed sample |
| 5 | A new oil order went into batch B | New order differs, or your old reference has aged | Strip and candle checks against a retained sample | Retained candles of A and B match at matched age |
| 6 | A new wick pack, and B's pools are smaller or shallower | Wick lot | Pool and flame differ in the side-by-side; physical checks differ | Pools and flames match |
| 7 | A new wax bag, and B looks or feels different, or pools differently | Wax lot | Unscented old-bag against new-bag twins differ | Twins match |
| 8 | A new jar delivery | Jar dimensions changed the pool | Internal diameter differs by measurement | Same measurements, same pool |
| 9 | Both batches smell weaker than you remember | Your nose, room or memory, not the candles | A retained candle from A is also faint now | A throws as it did when approved |
Rows 1 to 3 need nothing but your batch sheet and a calendar. Rows 4 and 5 are the oil, split deliberately: your own stock ageing in use is handled by the own-stock audit, and a new order by the new-order gate, which uses the incoming-batch comparison as its method. Rows 6 to 8 are the materials the title asks about. Row 9 is why a retained candle matters: it is the only witness that does not rely on memory.
The basis slip, worked
Row 2 is the quiet one. Last month you weighed a 40-candle batch at 8% of total weight: 480 g of oil into 5,520 g of wax, 6,000 g in all. This month a helper read "8%" as oil added to wax and put 480 g into 6,000 g of wax. The batch is now 6,480 g at 7.41% of total weight, 0.59 percentage points under plan, with 11.1 g of oil in each candle instead of 12 g, and it fills 43 candles instead of 40. Each candle is short ₹4.47 of Sandalwood at the 500 g price. The candle count gave it away before anyone lit a wick. The conversion itself belongs to the load-basis hub.
The diff sheet: two batches, row by row
The diagram at the top is the diff sheet drawn as lanes. Here is how to build yours in about an hour from what you already have: batch sheets if you keep them, and if you don't, invoices, the labels on bags and bottles, dated photos on your phone and your order chats.
For the full batch record to keep from now on, see the repeatable mixing and curing protocol and, in this cluster, the traceable batch sheet. If the batches were different sizes, the sheet you need is the test-against-production version in the 1 kg to 10 kg post.
The retained-candle side-by-side
When the diff sheet leaves more than one suspect, or none, burn the evidence. The control is last month's batch, in candles you kept unburned; the test is this month's. Everything else is held the same: room, burn length, trim, nose, scoring. The comparison needs no new materials, which is the point: you learn whether batch B really is weaker before you spend anything on finding out why.
The set and the schedule
A1 and A2: two unburned candles from last month's batch. B1 and B2: two unburned candles from this month's. Burn A1 and B1 on separate evenings in the same closed room once B has reached the age at which A was approved; in the worked example that is day 14, on 3 October 2026. Burn A2 and B2 a few days later as the duplicate. A is older than B throughout, so it is at least as cured: if B matches A, cure was the difference; if B is still weaker, cure alone does not explain it. Never burn two candles in the same room at once, because you cannot tell which one you smell.
| Item per candle | Basis | Value |
|---|---|---|
| 12 g Sandalwood | 500 g at ₹2,513.40 (₹5.03/g) | ₹60.32 |
| 138 g CSI 464 | 10 kg at ₹5,074.00 (₹0.51/g) | ₹70.02 |
| One 150 g jar | Pack of 10 at ₹944.00 | ₹94.40 |
| One C1 wick | Pack of 100 at ₹590.00 | ₹5.90 |
| One candle | ₹230.64 | |
| Four candles (A1, A2, B1, B2) | already made; no new cash | ₹922.57 |
| One of each, if you kept only one from A | no duplicate: treat the result as provisional | ₹461.29 |
| One 40-candle batch, for scale | ₹9,225.71 |
All costs are material value and exclude labour, freight, packaging and GST. Burning four candles from stock is 10% of one batch's material value, and it decides whether the other 38 of batch B go on sale. If you kept no candle from A but still have last month's wax, oil and wicks, pour a reference pair from those leftovers (₹461.29 in materials) and compare it with B at matched age: weaker evidence, because the reference is newly poured, but better than memory.
The protocol
Same room, door shut, fan and AC off. Each burn runs until the pool reaches the jar edge or four hours pass; a commonly cited rule of thumb expects a full pool in about 3–4 hours, and a very rough one is an hour per 2.5 cm of width, about 2.8 hours for the 7 cm-wide jar. Log pool diameter at one, two and three hours, pool depth at the end (about 0.5–1 cm is a common target), flame height and any soot. Sniff on entering from outside at one hour, two hours and full pool, ideally a second person who doesn't know which candle is lit, and score 0 (nothing) to 3 (fills the room). Trim every wick the same way. Burn within sight.
| What you see | What it points to | Next step | Purchase |
|---|---|---|---|
| B matches A at matched age | Cure age at test | Approve B; record "judge at day 14" on the spec | Nothing |
| B weaker; pools and flames match A's | Load or oil: the scent in B is less, not released less | Reconcile grams; own-stock audit (3220); new-order gate (3265) | Nothing yet |
| B weaker; B's pools smaller, shallower or slower | Wick pack or wax bag, whichever row changed | Wick lot (3264); wax lot (3263); both changed: the swap-back 2×2 | Nothing yet |
| B weaker; B's flame taller, sooty, or carbon on the wick | Wick pack or oil, whichever row changed; combustion can mask scent | 3264 or 3267 | Nothing yet |
| B weaker; B's pools differ and the jar delivery changed | Jar geometry | Measure old and new jars (3268) | Nothing yet |
| A is faint too | Your room, nose or benchmark moved, not the batch | Re-judge with a fresh nose in a smaller closed room | Nothing |
Every row ends in "nothing yet" or "nothing", and that is deliberate. The side-by-side tells you whether and where; the sibling posts tell you what. The only purchases this table ever routes to are a scale or thermometer for a maker without one, and whatever a sibling's test proves.
What not to buy while you investigate
We sell every material in this post, and we would still rather you bought nothing until the diff sheet and the side-by-side have spoken.
| Suspect | What it needs | From CSI, only if you lack it | Where it's tested |
|---|---|---|---|
| Cure age | Days, and an unburned candle | Nothing | This page |
| Load and basis | Reconciled grams; a scale that passes a known-weight check | Weighing Scale ₹354.00 | 3220 |
| Temperatures and stir | Logged figures next batch | Pen Thermometer ₹354.00 | 3278 |
| Own oil stock | Bottle history and a retained sample | Nothing | 3220 |
| New oil order | A proportional gate against a retained sample | Nothing until the gate says so | 3265 |
| Wick pack | Old pack against new pack, unscented | Nothing if both packs remain | 3264 |
| Wax bag | Old bag against new bag, unscented | Nothing if both bags remain | 3263 |
| Jar delivery | Measurements, old against new | Nothing | 3268 |
What to buy, suspect by suspect
Five items in suspect order: the two tools that turn process rows from "unknown" into numbers, the worked example's oil, and the wick and wax that sibling posts test. Chosen on page statements, price per gram or unit, and stock on 26 September 2026; CSI has no measured throw data, so nothing is ranked on throw. The oil table lists every size, with 150 g candles at 12 g and 40-candle batches at 480 g.
| Size | Price | Per unit | What it covers |
|---|---|---|---|
| Single | ₹354.00 | ₹354.00 | weighing oil and wax for every batch; capacity and reading step not stated |
| Size | Price | Per unit | What it covers |
|---|---|---|---|
| Single | ₹354.00 | ₹354.00 | logging add and pour temperature on every batch; range and accuracy not stated |
| Size | Price | Per gram | 150 g candles at 8% | 40-candle batches (480 g) |
|---|---|---|---|---|
| 15 g | ₹93.22 | ₹6.21 | 1 | none (15 g of 480 g) |
| 50 g | ₹271.40 | ₹5.43 | 4 | none (50 g of 480 g) |
| 100 g | ₹502.68 | ₹5.03 | 8 | none (100 g of 480 g) |
| 500 g | ₹2,513.40 | ₹5.03 | 41 | 1 (+20 g) |
| 1 kg | ₹5,026.80 | ₹5.03 | 83 | 2 (+40 g) |
| Size | Price | Per unit | What it covers |
|---|---|---|---|
| Thin (C1) / 10 | ₹59.00 | ₹5.90 | two wicks for a reference pair, if you are short |
| Thin (C1) / 100 | ₹590.00 | ₹5.90 | production: the same per wick |
| Thick (C2) / 10 | ₹94.40 | ₹9.44 | one step up, only if the pool test says so |
| Thick (C2) / 100 | ₹944.00 | ₹9.44 | production, after a C2 has passed a burn-down |
| Size | Price | Per unit | What it covers |
|---|---|---|---|
| 500 g | ₹260.00 | ₹0.52 per g | a reference pair from a fresh bag, if you have no leftover of last month's |
| 1 kg | ₹507.40 | ₹0.51 per g | the same, with enough left for a wick-step pair |
| 5 kg | ₹2,537.00 | ₹0.51 per g | most of a 40-candle batch (5,520 g) |
| 10 kg | ₹5,074.00 | ₹0.51 per g | one 40-candle batch with 4,480 g left, which is why batch B straddled two bags |
Map of this cluster: 3261–3280
This hub owns the short answer, the suspect order and the retained-candle side-by-side. Each of the other nineteen posts owns one test for one kind of change. One line per post, so you can go straight to the row your diff sheet flagged.
If the batch is not weaker but faint from the start (strong cold, faint hot), the triage is the cold-strong, hot-faint hub. Jars that vary within a delivery are also covered, from the buying side, by the jar dimension-variation post.
CandleMakingSuppliesIndia sells the wax, oils, wicks and tools named here, and does not sell finished candles. This page still ranks our materials below your records and your calendar, tells you not to reorder oil or wax to solve a weaker batch, says that the Sandalwood 1 kg is no cheaper per gram than its 100 g, and that any working one-gram scale does the scale's job.
Every price and per-gram figure was verified on CSI's live store on 26 September 2026; every size in the pick tables is in stock on that date, and the tables are built to flag any that is not. Load, cure and temperature wording is quoted from the product pages; where a page is silent in the text we captured, we say so. CSI publishes no lot or batch data, composition or reformulation notices, and nothing here implies that a CSI batch changed.
The suspect ranking, the diff-sheet rows, the side-by-side protocol and the 0–3 score are editorial judgement; the batch dates, candle counts and bag and bottle history are a worked example; the melt-pool times and depths are commonly cited rules of thumb. For lot numbers on your orders, bulk pricing, GST invoicing, and MSDS and IFRA documentation on request, message us on WhatsApp at +91 7397976926.
Frequently asked questions
- My Bestselling Candle Suddenly Started Tunnelling Even Though I Didn’t Intentionally Change the Formula — Could a New Wax or Wick Batch Be Responsible?
- My New Soy Wax Batch Feels Softer than the Previous One and My Candles Burn Differently — How Do I Verify Whether the Wax Itself Changed?
- I Opened a New Carton of Candle Wicks and Suddenly My Flames Are Smaller — How Do I Compare the New Wick Batch with the Previous One?
- My Fragrance Oil Smells Slightly Different from My Previous Order — Should I Make New Test Candles Before Using It in Commercial Production?
- My Candle Fragrance Performance Changes from Batch to Batch Even Though I Follow the Same Formula — What Raw-Material Variables Should I Investigate?
- I Increased My Batch Size from 1 Kg to 10 Kg and the Finished Candles No Longer Perform Exactly Like the Test Batch — What Changed?
- My Candle Formula Is Written in Percentages but Production Results Still Vary Between Batches — What Additional Process Information Should I Record?
- How Do I Create a Candle Batch Sheet That Records Wax Lot, Fragrance Lot, Wick Lot, Temperatures and Timings so I Can Trace Future Failures?
- My Candle Business Is Scaling and Random Quality Problems Are Increasing — How Do I Determine Whether the Problem Is Raw-Material Variation or Production Inconsistency?
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 — Gilli Mitti (Patchouli), Lavender Fragrance Oil, Luxury Soy Wax CSI 464 (Flakes Form) For Container Candles, Sandalwood Fragrance Oil, Woody Oud Fragrance Oil. They are general product reviews, not assessments of the diagnostic advice on this page. Names, star ratings, dates and products are as recorded by Judge.me and wording is unedited. "Verified buyer" appears only on reviews Judge.me recorded as verified — Reena Bagal, Jaya Sawlani, Thenirvaofficial, Renu, Akansha, Renam Dhoundiyal. Reviews below five stars are included as published, not filtered out.
Figures verified 26 September 2026, CSI live pricing: Sandalwood Fragrance Oil 15 g ₹93.22 (₹6.21/g), 50 g ₹271.40 (₹5.43/g), 100 g ₹502.68 (₹5.03/g), 500 g ₹2,513.40 (₹5.03/g), 1 kg ₹5,026.80 (₹5.03/g); Luxury Soy Wax CSI 464 500 g ₹260.00, 1 kg ₹507.40, 5 kg ₹2,537.00, 10 kg ₹5,074.00; Eco Candle Wicks Thin (C1) 10 ₹59.00, 100 ₹590.00; Thick (C2) 10 ₹94.40, 100 ₹944.00; Clear Glass Jar with Golden Lid (150 gram) Pack of 10 ₹944.00, Pack of 20 ₹1,888.00 (₹94.40 each); Candle Making Weighing Scale ₹354.00; Pen Thermometer For Candle Making ₹354.00. All in stock on 26 September 2026. Per gram = price ÷ grams; per wick or jar = pack price ÷ units; two decimals. Worked costs use the exact per-gram price, then round.
Non-price figures: load is a percentage of total candle weight (150 g at 8% = 12 g oil + 138 g wax; a 40-candle batch = 480 g oil + 5,520 g wax). Ceilings and temperatures are as stated on the product pages (Sandalwood up to 10% for soy, cure 48–72 hours; CSI 464 up to 10%, pour 80–90°C; 150 g jar hot pour up to 85°C) and are formulation limits, not regulatory limits. The batch dates, bag, bottle and pack history, and the basis slip are a worked example. Melt-pool times and depths are commonly cited rules of thumb. The suspect ranking and decision rules are editorial judgement. Costs exclude labour, freight, packaging and GST. Diwali 8 November 2026 is a calendar fact.