r/ReagentTesting • u/1969GibsonLesPaul • 2d ago
Discussion This is how you tell if you have a fresh control reference of your reagent. IN CLEAR GLASS ON LEFT. Not black plastic on right. You have to waste reagent just to get a few drops of a control sample out of the black plastic bottle.
Am i just a complainer or do i have a valid point? These reagents aren’t cheap and the 5mL bottle is only a teaspoon of reagent. Please switch to clear glass.
If you go to the bunk police site and search for marquis they list all the reagents in a frosty white 5mL plastic bottle. This poses the same problem. You can’t see your reagent that well to know if it’s fresh or turned color. These need to be in clear glass bottles too.

