Is this for you at all
Updated
On this page8
What this covers
Wax melts, scent shots and wax bars: small solid portions of scented wax that a customer puts in a warmer. No wick, no flame, and therefore none of the candle fire-safety questions, which makes this a different product from a candle in nearly every respect that matters.
The volume
Every container in this catalog is published by capacity in milliliters, because capacity is what a container has. The shelf here runs 22 to 500 ml across 224 containers, and that figure is the only one the catalog can give you.
The temperature
The pour is limited by what the container tolerates, and the catalog carries that: PET 120 F, PP 240 F, glass 300 F. Half this shelf is PET, which is at or below a normal wax pour, and that is the single most expensive thing on this page.
The weight
16 CFR 500.7 requires the net quantity declaration to be in weight if the commodity is solid, and a melt is sold solid. So the label carries a weight, the jar is described by a volume, and converting between them needs the density of your own wax.
Which is about 0.9
Most waxes sit near nine tenths the density of water, so a 236 ml jar filled to the shoulder holds roughly 210 g rather than 236 g. Weigh yours rather than trusting that figure, because it moves with the wax and with the fragrance load.
Then part 500 says how to print it
Where on the package, in which units, in what type size, with which abbreviations. All of it specific, all of it short, and most melt labels in this trade get at least one of them wrong.
Why this is a packaging problem and not a wax problem
The wax, the fragrance and the warmer are all questions your wax supplier can answer. The temperature rating of the jar, the geometry that lets the melt out, and the units the law requires on the label are not, and they are where this product is most often lost.