I’m Buying 1 Kg of a Fragrance After Approving a 100 g Sample — Should I Make a Confirmation Candle Before Using the Bulk Oil in Production?

Why an approved sample does not approve the bulk

When you test a 100 g sample and like the result, you have approved that particular material in your particular recipe. The 1 kg pack that follows may well be identical, but nothing on the label proves it. CSI product pages do not publish lot numbers or certificates of analysis, so there is no line on the pack that says this kilogram came from the same stock as your sample. The same is true of many suppliers. What you have instead is your own ability to compare.

Time matters too. If weeks or months have passed between the sample and the bulk order, either material may have aged a little. Your recipe may have drifted without you noticing: a different wax bag, a new box of wicks, a slightly different pouring temperature. A confirmation candle checks the whole system as it stands today, which is what your customers will actually receive.

The point is proportion. You are not re-developing the candle; you are confirming it. That means the approved recipe stays fixed and the only new thing is the oil.

The goods-in screen for the kilogram

Worked example: Vanilla Bean from 100 g to 1 kg

A maker approved Vanilla Bean from a 100 g bottle at ₹790.00, which is ₹790.00 ÷ 100 = ₹7.90 per gram. The 1 kg pack costs ₹7,646.00, or ₹7,646.00 ÷ 1,000 = ₹7.646 per gram. At 8% of a 200 g candle, each jar takes 16 g of oil and 184 g of wax, so the kilogram fills 1,000 ÷ 16 = 62 candles, rounding down, with 16 × ₹7.646 = ₹122.34 of oil in each.

The approved recipe uses CSI 464 soy wax, a thin eco wick and a 200 ml matte jar. The confirmation run is two candles poured from the bulk oil, so the materials are:

Set that against the value at stake: 62 candles, with ₹7,646.00 of oil alone going into them. The confirmation uses 32 of the 1,000 g, or 3.2% of the oil, and costs no more in materials than the two candles themselves. It also answers a question the strip cannot: whether the bulk behaves like the sample in this wax, with this wick, in this jar.

Keep the arithmetic in perspective for your own recipe. A smaller jar, a lower load or a cheaper wax will make the confirmation cheaper still; a larger jar or a premium wax will raise it. The ratio is what matters: a confirmation is always a small fraction of the candles it protects.

This oil deserves the check for a specific reason. Its product page states 2.5% vanillin and warns of potential discolouration, advising testing with lighter waxes, and it recommends wick testing per container and wax. A change in the oil's colour tendency or its effect on the flame would show up in a confirmation candle long before it showed up in a customer's home.

When a strip screen alone may be enough

There are honest cases for a lighter touch. If the kilogram arrives within days of the sample, the strips and colour match cleanly, and the first candles are for your own testing, stock photography or a market stall where you can watch customer reactions, a strip screen with a retained sample may be all the evidence you need. Write that decision down with the reason, so it is a choice rather than an oversight.

The case for the confirmation strengthens with every factor that raises the stakes: a long gap since the sample, pale or white wax, a gift or corporate order where every candle leaves your hands at once, or an oil with published vanillin like this one. The more of those that apply, the less sensible it is to skip two candles.

What the confirmation candle must show

Cure both confirmation candles for the same period you used in the approval test. For soy, the product page gives 48–72 hours as the minimum before burn testing; many makers compare again at a week, and it is sensible to repeat the comparison at the same points you used for the sample. Then burn one confirmation candle beside the reference, in the same room, for the same length of time, and never leave either unattended. Stop the test if either candle smokes heavily or flares.

These criteria are a suggested starting point, not a standard and not CSI policy. The important principle is that each row is judged against your own reference candle, not against memory.

Release, or escalate to wider testing

If the two candles match the reference, move the kilogram from quarantine to approved stock, note the confirmation candle codes on your goods-in record, and keep one confirmation candle as a finished reference for the life of the stock. If they do not match, do not start re-designing the recipe straight away. First, check the recipe really was identical: same wax lot, same wick, same load, same temperatures. Then speak to the supplier with your photographs, strip notes and candle observations; for CSI oils that is WhatsApp +91 7397976926.

Only when you are satisfied that the oil itself has changed does wider testing make sense, and at that point it is a fresh qualification rather than a confirmation. A kilogram that fails a fair confirmation stays out of production whoever supplied it, including us.

And be equally honest in the other direction. If the confirmation matches, do not pay for a full wick and load re-test just to feel busy. The two candles have answered the question you had.

Where this page fits

CSI already has guides that cover parts of this question. This page covers the goods-in check for the question above; these go deeper on the rest:

Three things to buy for this job

Frequently asked questions