9ml Clear Plastic Test Tubes with Caps 15×100mm, Pack of 30 by DEPEPE (3ml) (3ml)

I didn't use these for actual chemicals or science - they were used for a mad scientist costume. They hold up to Diet Mountain Dew and Bai fruit drinks very well. I did note that carbonated beverages would, now and then, cause the lid to pop out from pressure build-up. Anyway, for my purpose, they were perfect.

These are nice, durable little vials - perfect for transporting a little bit of Styptic powder for a short trip with a pet recovering from some stitches.

Caps can be applied as air tight or slightly loose. Smaller than expected. Full number of tubes came in the order. 2.5 inches in height. .5 inches in width. Hard sturdy plastic. DO NOT HEAT.

These are really small. Some came cracked at the top where the stopper went in, so those were unuseable as the liquid would leak out.

Not large enough to hold powder charges

My four stars is based on future use of these tubes. I think they'll work out fine for a project later this year.

lightweight - they are plastic so really just one use.

These are a bit smaller than I would like but they really are fine.