Review on 🧪 Enhanced API Replacement Test Tubes with Caps - Ideal for API Freshwater Master Test Kit - 24 Count Box by Anita Davis

I use the api master test kit a lot and the tubes and caps that come with it work great. For some reason the lids don't close properly when you replace them and when you shake them to do the test the liquid squirts out. At least two test solutions can be corrosive to metals and cause damage to skin and eyes. I really don't understand how safe it is to use them. I also don't understand how the test can be accurate since with each shake you lose both the water from the tank and the test solution.