I'm Buying My First 25 Kg Carton of Soy Wax — What Should I Verify About the Wax Before Moving from Small Test Packs to Commercial Quantities?

The short answer: verify that it is the same wax, then prove it at your batch size

You approved a wax from a test pack — perhaps a 500 g or 1 kg bag that made two to five candles. A 25 kg stock is about 136 candles' worth of wax at 184 g each (a 200 g candle at 8%), or 129 with a 5% allowance. Everything you learned on the bench rests on one assumption that nobody has yet checked: that the wax inside the bigger pack behaves like the wax inside the small one. Nobody — CSI included — publishes lot numbers, certificates of analysis or batch-consistency data for soy wax, so that assumption is yours to verify.

Verification has two halves. The first is identity: is this the product you tested, in the same format, in sound condition, matching your retained sample? That takes an hour with a scale, a thermometer and your eyes. The second is behaviour: do candles from the new stock burn, set and smell no worse than candles from the test pack, poured side by side — and does the wax still behave when you pour it at your normal batch size rather than a kitchen-scale test? That takes a cure period and one pilot batch.

Neither half is expensive. The bench materials for the identity and side-by-side checks cost about ₹1,432.02 in oil, wicks and jars — 9.0% of a 25 kg CSI 468 stock — and the pilot batch produces saleable candles if it passes. The expensive mistake is the opposite one: opening all five bags, pouring a full production run, and discovering a problem only after the candles have cured.

The six gates, in order

Every gate either passes the stock or holds it. A hold does not mean the wax is bad; it means you stop, keep the unopened bags sealed, and ask the supplier before going further. The order matters: cheap checks come first so that an obvious problem stops you before you spend oil and jars on it.

Gates 1–3 are about identity and take an afternoon. Gate 4 needs your usual cure checkpoint plus two burns, and gate 5 can run in parallel with gate 4's cure if you are willing to hold the pilot candles until gate 4 passes. If you are under time pressure, do not skip gates — shorten the cure checkpoint on gate 4 and say so on your record. Why one successful kilo is not yet evidence for 100 kg explains what the test pack could and could not prove, and the 5 kg or 10 kg trial post sizes the pilot for larger commitments.

Gates 1–3: identity checks that cost almost nothing

Start on the day the stock arrives. Weigh every bag, not just one; a 10 kg bag that weighs 9.6 kg is a conversation with the supplier, not a rounding error. Check that each seal is intact and that the wax inside is dry, free-flowing in its format and free of debris. Write the order date and pack size on every bag in marker — CSI publishes no lot numbers, so your order date is your lot label. If you build the 25 kg from 2 × 10 kg + 1 × 5 kg as above, decide now that the 5 kg bag is the one you will open for checks; the two 10 kg bags stay sealed.

Then compare with what you approved. Put a handful of the new wax next to a handful of your retained test-pack sample on white paper in daylight and note shade and smell. Melt two 100 g unscented pucks — one from each — in identical containers at the same time, let them set side by side, and compare their surfaces once cool. This is not a measurement of anything CSI publishes; it is simply a quick way to notice a gross difference before you commit oil, wicks and jars. A small difference is a flag for gate 4, not a reason to reject the stock.

Finally, re-read the product page against your recipe card. For CSI 468, CSI's product page states a melting point of 50–53°C, a pour temperature of 58–60°C, a fragrance load of up to 13% and a 60-month shelf life in cool, dry storage. For CSI 464, the page states a fragrance load of up to 10%, lists an 80–90°C melt/pour working range and a 60-month shelf life. If your recipe card says something different, resolve that before you pour. Ask CSI on WhatsApp for the MSDS if you need it for your records; we do not promise certificates of analysis.

Gate 4: three candles from the carton against three from the test pack

This is the side-by-side that matters. Pour three candles from the new stock and three from your retained test-pack wax on the same day, each 16 g of Bergamot Amber + 184 g of wax in the same jar with a wick from the same pack. Cure all six to the same checkpoint you used when you approved the wax — 48 hours, 7 days and 14 days are the labelled examples used in this series. Burn one new and one control together for a 3–4 hour cycle, twice. Keep the third pair on the shelf.

Gate 5: one bag at your real batch size

Bench candles answer "is the wax the same?". They do not answer "does my process still work at scale?". Melting 5 kg is not melting 600 g: it takes longer to heat, holds heat differently, needs more stirring to distribute fragrance evenly, and the jars poured last sit at a different temperature from the first. Those are general production effects, not CSI wax properties, and the only way to see them is to pour one normal batch. Use the 5 kg bag: at 184 g of wax per candle and a 5% allowance it makes about 25 candles.

Pull three candles — the first, the middle and the last poured — and burn each beside a control. If the last-poured candle sets with a rougher top or pulls away from the glass where the first did not, that is a process finding (pour temperature drift across the batch), not a wax finding, and it is far better to learn it from 25 candles than from 136. Process tolerance as a wax criterion and precise versus forgiving pour temperatures go deeper into that difference.

The two waxes priced as a 25 kg stock

These are priced as examples of a first larger-format stock, not ranked: CSI publishes no data showing one performs better. Which wax you are verifying is whichever wax your test pack approved.

The release rule

For the reader who asked: buy the 25 kg as 2 × 10 kg + 1 × 5 kg of the wax your test pack approved — ₹15,925.00 in CSI 468 or ₹12,685.00 in CSI 464 — so that the 5 kg bag can carry gates 3–5 while the 10 kg bags stay sealed. Keep 600 g of your test-pack wax as control, budget about ₹1,432.02 for the confirmation candles, and pour one normal batch before you open the rest. Buffers on a 75 kg order and whether 92 kg should become 100 take the next step, once the wax is verified and the question becomes quantity.

Frequently asked questions