My Candle Hot Throw Changes Slightly Between Raw-Material Batches — How Do I Determine Whether the Variation Comes From Wax, Fragrance or Wick?
शेयर करना
How many candles per test arm? Five candles per arm is a sensible starting point. A 1 kg batch at 8% (920 g wax + 80 g oil) fills five 200 g candles exactly.
What if I used up the old wax? Compare against finished candles from the old run, but remember they are older and cured longer. Keep retained samples from now on.
Should I just raise the fragrance load? No. That hides the cause and may push you past the wax maker's stated maximum, such as up to 10% for CSI 464.
First prove it is a material change at all
When hot throw drops slightly just after a new carton of wax or a new kilogram of fragrance arrives, the delivery is the obvious suspect. It is not always the right one. Hot throw is the end result of a chain: how much oil went in, what temperature it went in at, how long it was stirred, how long the candle cured, which jar and wick it sat in, and which room and nose judged it. A small change anywhere in that chain looks exactly like a raw-material difference.
So before you order a single test candle, open the batch sheets for the last good run and the first weaker run and read them side by side. You are looking for any process line that moved. If you do not yet record these lines, this investigation is the moment to start, because without them you cannot separate a material cause from a process one.
| Line on the batch sheet | Why it can mimic a material change | What to confirm |
|---|---|---|
| Fragrance load basis | 8% of total weight and 8% added on top of the wax give different candles | Both runs used 184 g wax + 16 g oil per 200 g candle |
| Fragrance addition temperature | Adding at a different point changes how the oil behaves in the wax | Same temperature, measured with a separate thermometer |
| Stir time and method | A shorter or gentler stir leaves oil unevenly spread | Same method, same time, same person if possible |
| Cure time before testing | A younger candle often throws differently from an older one | Both candles tested at the same cure age |
| Test room and evaluator | Room size, airflow and a tired nose all shift perception | Same room, same burn length, more than one nose |
| Jar and wick lot | A different jar diameter or wick lot changes the melt pool | Jar and wick records match between runs |
If any line differs, correct it and remake the candle before blaming wax, fragrance or wick. If every line matches, you have earned the right to test the materials.
The one-variable swap test
The method is simple and it only works if you are strict: change one material at a time and hold everything else constant. You need some of the previous wax, some of the previous fragrance and some of the previous wicks. That is exactly why retained samples matter; without them, you are comparing against memory.
Build four small test arms. Arm A is your control, made entirely from the old materials. Each of the other arms swaps in exactly one new material. If only one arm moves away from the control, you have found your variable.
| Arm | Wax | Fragrance | Wick | If this arm differs from A |
|---|---|---|---|---|
| A (control) | Old lot | Old lot | Old lot | Reference only |
| B | New lot | Old lot | Old lot | The wax delivery is the likely cause |
| C | Old lot | New lot | Old lot | The fragrance delivery is the likely cause |
| D | Old lot | Old lot | New lot | The wick delivery is the likely cause |
Worked example: four arms of five candles
Say your production candle is 200 g at 8% fragrance load, calculated on total weight. Each candle is 184 g wax and 16 g oil. Make each arm as a 1 kg scented batch: 920 g wax plus 80 g oil, which fills five candles exactly. Four arms need 4 kg of scented wax in total, which is 3.68 kg of wax and 320 g of oil, giving 20 candles.
Five candles per arm gives you enough to burn two or three and keep the rest for a second session. One candle per arm is not enough; a single odd wick placement or an air bubble can move one candle on its own. Treat five per arm as a suggested starting point, and add more if the differences you are chasing are very small.
If you no longer have the old material
Many makers reach this point with the old carton already used up. The test still has value, but it becomes weaker. You can compare new-material candles against finished candles from the previous run, if any remain in stock, with two caveats: those candles have cured for longer, and they may have been stored somewhere warmer or brighter. Both effects change throw on their own.
A better fallback for next time is to keep a small, sealed quantity of every wax and fragrance lot until the candles made from it have left your shelves. It costs very little compared with a batch you cannot explain. Wicks are easy to retain too; set aside a handful from each pack.
Reading the burn results without fooling yourself
Hot throw is judged by people, and people are easy to bias. If you know which candle contains the new fragrance, you will find a difference whether or not one exists. Code the candles with letters or numbers that do not reveal the arm, and let someone other than the person who poured them light and arrange them.
Burn each candle in the same room, for the same length of time, with doors and fans in the same position. Ask at least two or three people to score each candle separately before they talk to each other. Record what the wick is doing as well as what the room smells like, because the flame often tells you which material moved.
| What you observe | Most likely source | Next check |
|---|---|---|
| Weaker scent, same melt pool width and depth | Fragrance | Compare the new oil against a retained sample on smelling strips |
| Weaker scent, narrower or shallower melt pool | Wick or wax | Look at arm D first, then arm B |
| Larger flame, soot or heavy carbon build-up | Wick | Confirm the wick size and type match your record |
| Different surface or frosting, similar scent | Wax | Scent may be fine; appearance is the wax signal |
| All arms identical to control | Process, not materials | Return to the process rule-out table |
A melt pool that reaches a different width or depth in the same jar is a strong clue. Fragrance oil rarely changes how far the pool spreads; wax and wick do. If the pool looks identical and only the scent strength changed, the fragrance is the first place to look.
What to do once you know the source
If the wax arm moved, write down exactly what changed: throw, pool, surface. Message CSI on WhatsApp (+91 7397976926) with the product name, pack size and your purchase date, and ask what batch information they can share for that delivery. Do not assume how any supplier numbers or documents its lots; ask.
If the fragrance arm moved, compare the new oil with your retained sample on smelling strips and in a cold jar. Ask for the IFRA and MSDS documents for the oil on WhatsApp if you do not already hold them. Resist the urge to simply add more oil. Luxury Soy Wax CSI 464 has a stated fragrance load of up to 10%; if you are already near that, pushing higher is not a fix.
If the wick arm moved, re-run a small wick test with the new wicks in your production jar before the next batch. A new wick lot sometimes needs a size change; that is a wick-test decision, not a formula decision.
The whole exercise costs a few kilograms of material and a week or two of cure and burn time. Compare that with pouring 500 candles on a guess. The test is cheaper every time.
Where this page fits
CSI already has guides that cover parts of this question. This page takes the production-floor angle; these go deeper on the rest:
Three things to buy for this job
| Option | Price | Status on the September 2026 pull |
|---|---|---|
| 500 g | ₹260.00 | In stock |
| 1 kg | ₹507.40 | In stock |
| 5 kg | ₹2,537.00 | In stock |
| 10 kg | ₹5,074.00 | In stock |
| Option | Price | Status on the September 2026 pull |
|---|---|---|
| 15 g | ₹93.22 | In stock |
| 50 g | ₹271.40 | In stock |
| 100 g | ₹502.68 | In stock |
| 500 g | ₹2,513.40 | In stock |
| 1 kg | ₹5,026.80 | In stock |
| Option | Price | Status on the September 2026 pull |
|---|---|---|
| Thin (C1) × 100 | ₹590.00 | In stock |
| Thin (C1) × 1,000 | ₹5,900.00 | In stock |
| Thick (C2) × 100 | ₹944.00 | In stock |
| Thick (C2) × 1,000 | ₹9,440.00 | In stock |
CANDLEMAKINGSUPPLIESINDIA supplies raw materials and production equipment, not finished candles. This guide separates what is general production practice from what CSI's own product pages state, and labels every suggested tolerance or timing as a starting point for your own validation.
Prices are live CSI prices from September 2026; product pages are authoritative. Where a spec is not published — such as the scale's capacity or the thermometer's range — this guide says so rather than filling the gap.
For bulk quotes, batch details on a specific delivery, GST invoicing, IFRA and MSDS, message us on WhatsApp at +91 7397976926.
Frequently asked questions
- I Buy Candle Raw Materials in Bulk and Cannot Afford to Discover Quality Differences After Production — What Incoming Checks Should I Perform Before Releasing Materials for Use?
- Should I Keep a Retained Sample From Every Wax and Fragrance Batch Used in Commercial Candle Production?
- How Much Wax and Fragrance Should I Keep as a Retained Sample If I Need to Investigate Future Customer Complaints?
- I Have a Customer Complaint About a Candle Made Three Months Ago — How Can Batch Codes Help Me Identify Which Wax, Fragrance and Wick Were Used?
- I Produce the Same Candle Every Month — What Information Should Go on My Internal Batch Sheet so I Can Compare Production Runs Over Time?
- My Team Accidentally Mixed Raw Materials From Two Suppliers — How Can Better Storage Labels and Lot Tracking Prevent This at Larger Production Volumes?
- I Have 30 Fragrance Oils in Bulk Storage — How Do I Organise Them so Similar Names, Variants and Batch Numbers Are Not Confused During Production?
- I'm Buying 25–100 Kg of Wax at a Time — How Should I Rotate Inventory so Older Material Is Used Before Newer Deliveries?
- My Candle Business Needs Consistent Hot Throw Across 10–20 Fragrances — How Do I Standardise Fragrance Oil, Wax and Wick Testing Before Buying in Bulk?
- My Fragrance Supplier Sent a New Batch of My Bestselling Scent — What Should I Compare Against the Previous Batch Before Making Hundreds of Candles?
Customer reviews: The reviews at the top are genuine, published Judge.me reviews — Arzoo Vyas (5★, not recorded as verified); Kaushiki Satarkar (5★, verified); Subhankar Roy (4★, verified); Arminder Kaur (4★, verified); Deepika k. (5★, verified). Names, ratings, dates and products as recorded by Judge.me.
Product facts (September 2026, CSI live store): Electric Wax Melter (Imported) 10 kg capacity ₹21,240.00, 20 kg capacity ₹25,960.00; its product page states 9.5 litres per melt, a 60–100°C display with ±10°C deviation, and about 30 minutes to melt 10 kg of soy at 100°C. Mini melter (1 litre) ₹2,360.00. Steel Pouring Pitcher 600 ml ₹708.00 (150 ml out of stock). Weighing scale ₹354.00 and pen thermometer ₹354.00, capacity/range not published. Luxury Soy Wax CSI 464 (flakes) ₹507.40/kg at every pack; Eco Candle Wicks ₹5.90 (C1) / ₹9.44 (C2) each. Published oil flashpoints include Roasted Coconut 93°C and Gardenia 98°C.
Assumptions: Fragrance load is a percentage of total candle weight (200 g = 184 g wax + 16 g oil at 8%); planning wastage 5%. Melted soy wax taken as roughly 0.9 g per ml for rough volume conversions. Tolerances, stir times, sampling plans, hold times and capacity rates on this page are suggested starting points to validate in your own production, not measured CSI data. Worked examples are illustrations. Prices and availability change — product pages are authoritative.