What is the most common jar sizing mistake?

Choosing the jar before the fill weight. The fill weight is the number on the label, so it has to set the diameter and the height rather than follow them.

Does the glass colour change the candle?

It changes how the wax reads. Amber hides the yellowing a white or cream wax can develop in daylight, and softens the colour behind it.

Can I buy jars and wax in one order?

Yes, and it is usually cheaper landed. Glass is heavy and bulky and wax is heavy and dense, so one container costs less per unit than two shipments; the wick is also matched to the jar and the wax on the same sample.

What jar sizes are available?

Clear straight-sided cylinders in ascending heights for container candles, taller and narrower holders for granule fills, amber glass with metal screw lids, and a 250 ml relief-pattern container with a lid.

What is the minimum order?

MOQ is quoted per project against your volume rather than as a blanket number, and glass is supplied in bulk cartons.

Empty Candle Jars Wholesale: How to Specify

Q: Do I need a lid?

That depends on the channel. A metal screw lid keeps fragrance in before first use and survives a container load better than a push-fit; if the unit ships inside its own outer box, the lid can be lighter.

An empty candle jar is a specification, not a purchase. The diameter sets the wick, the height sets the fill weight, and the glass colour decides whether the wax behind it reads as premium or as yellow. Buy the jar last and you buy it twice.

This is the order to fix the numbers in, and what to check on a sample before you commit volume.

The jar decides the candle, not the other way round

A jar that tapers inwards concentrates heat at the shoulder, so the candle tends to tunnel no matter how good the wax is. A straight-sided cylinder melts to the same distance from the wick at every height, which is why straight sides are not a style choice — they are the shape that keeps a burn even.

The same logic runs through the rest of the specification. The jar is not packaging that the candle goes into afterwards; it is the constraint the candle is written against.

Fix the four numbers in this order

Fill weight first. It is the number on the label and the number the customer compares, so it is the only sensible starting point.

Diameter second, because that is what sets the wick. A jar too wide for the wick you tested will tunnel at the edge.

Height third. It follows from fill weight and diameter — and remember that a candle is never filled to the brim.

Colour and lid last. These are shelf and shipping decisions, not burn decisions, which is exactly why they belong at the end rather than the start.

Straight sides, amber glass and what each is for

The clear range is a straight-sided cylinder in ascending heights. Two jobs get specified from the same glass and then diverge:

Container candle jars are sized to the wax and the wick, sold empty, and chosen so the fill weight on the label matches what the jar actually holds.
Granule-fill holders are taller and narrower, built to hold a loose fill rather than a poured candle.

Amber glass is a separate decision with its own reason: it hides the yellowing that a white or cream wax can develop in daylight, and it softens the wax colour behind it. A metal screw lid keeps fragrance in before first use and survives a container load better than a push-fit. If the jar is the retail pack, the lid is part of the product; if the unit ships in its own outer box, the lid can be lighter.

What to check on a sample jar

The fill line. Fill a sample with your wax to the level you intend to sell at, and confirm the label weight is actually in the jar.
The lid fit, after the jar has been through a warm container. A push-fit that is fine in the showroom can lift in transit.
Wall and base thickness. Two jars of the same nominal size from different moulds do not hold the same weight.
The neck, if you are speccing a diffuser or a narrow-mouth jar. Reeds and wicks are matched to it, not to the body diameter.

Why the glass and the wax belong in one shipment

Glass is heavy and bulky; wax is heavy and dense. A shipment that carries both in the same container is materially cheaper per unit than two shipments arriving separately — and the saving shows up in the landed cost, not the unit price.

There is a second reason that is not about money. One supplier means one set of approvals: the wick is matched to the jar and the wax on the same sample, so the burn is proven before either item is ordered in volume. Wax ordered alongside the glass ships with the batch COA for its lot.

What to put in the RFQ

The fill weight you intend to sell
The glass colour, and whether a lid is required
Whether the jar is the retail pack or ships inside one
Monthly volume, and whether the schedule is seasonal
Whether the same order should carry the wax and the wick

Send that and the sample jar comes back with the wick recommendation rather than after it. Reply within 24 hours by WhatsApp or phone at +86 133 8403 0866, or by email to kris@posision.com. The wick page covers the diameter-to-wick step, and the soy and coconut apricot lines each behave differently in the same glass. Send an RFQ with your fill weight and colour, or ask for the sample jar first.

Empty Candle Jars: Specifying the Glass Before You Fill It