I left the chlorine test water in the test tube overnight, it turned black and also stained tube. I know they're cheap, but anyone know a way to get the stain out? Whys it turn black overnight anyway? Thanks!
Test tubes stained black...fix?
- Thread starter xray328
- Start date
3:1 water/muriatic acid mix will likely clean it..
Just jeep it rinsed well after that.
Just jeep it rinsed well after that.
