
I noticed a reviewer that these bottles were larger than 1oz as described. I measured one of mine with a medicine cup marked ml and the bottle holds 40ml filled to the brim so they're a little over 30ml but less than 1 1/2 oz per teaspoon. So if precision is important, it's not exactly 1 ounce. But for my purposes, these are the best quality, perfectly sized travel bottles I've found.

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