1 Oz Bottles: 30 ml, Samples and the Cost Floor
By Joe Joo · 8PCK · Shantou · Updated 26 October 2026
1 oz is 30 ml — the sample and essential-oil size. Below this, the cap and the filling cost more than the bottle, and the price stops falling.
At 30 ml the unit price is dominated by the closure and the filling, not the resin. That is why a 1 oz bottle often costs more than half of a 2 oz.
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The Cost Floor
Resin at 30 ml is a few cents. The cap, the label and the filling are not. Below 1 oz the price stops falling because the fixed parts dominate.
18/410
Droppers and small screw caps.
20/410
Small mist sprayers and flip-tops.
Where 1 Oz Is Used
Essential oils, serums, samples, craft pigments and travel kits.
Where It Fails
A dropper that does not reach the base wastes 10 % of a 30 ml fill, which is visible to the customer.
Questions We Get on This
How many ml is 1 oz?
About 30 ml.
What is a 1 oz bottle used for?
Essential oils, serums, samples and travel.
What neck?
18/410 for droppers, 20/410 for sprayers and flip-tops.
What is the MOQ?
1,000 pcs per colour.
Sizes That Fit This Guide
Get a Price on This, Within One Business Day
Tell us the capacity, the neck and the quantity. You get unit price, lead time and a sample plan — not a catalogue.
Every batch is gauged at the neck and weighed. The documents travel with the shipment.