Review on DEPEPE Small Clear Stoppers - 15×100mm for Enhanced SEO by Tim Ram

I have (by last count) a dozen aquariums. To ensure good water quality for my fin friends, I test several different water values with test drops every week. I took these test tubes and a test tube to make working with all the water sample tubes easier and it made that job a lot easier. whenever I dropped one while washing afterwards. These tubes are much stronger and I haven't broken any yet, although I often drop one or more in the sink when washing them.