🧪 Z COLOR Plastic Container: A Comprehensive Education Tool for Laboratory Experiments Review

They are slightly opaque which I think could be a problem as I use them as a replacement for API tubes. In fact, I don't find it difficult to check the color through them. also in glass tubes. I only rinse once then leave it filled with water for a while and the remaining blue color will disappear on the next rinse. I don't miss getting reagents on my fingers when I'm shaking!

For those using these as API replacements: plan to wash them at least twice between uses, I use them often and if you flush them and put them on a paper toilet over time it will remove some of the test chemicals rinsed out badly (usually blue) on towels. I recommend rinsing them well and then placing them upside down in a large shot glass with a paper towel at the bottom. Also, they work, but I can't say I would buy the same ones again. broke upon arrival which is not cool.

Perfect! Exactly what I was looking for! I'm very clumsy and broke all of my API test tubes that came with my test kit, so I knew I needed something more permanent. I've dropped them off the counter, stepped on them, dropped things on them and they didn't jump or even move! It holds over 5mL and the screws on it just don't stick like the API tubes I LOVE! So I can shake the tube aggressively and no water comes out. Needless to say, I LOVE these vials and would recommend them over API glass…