Most pH test kits are simple to use ... Place two tablespoons of soil in a bowl and moisten with distilled water. Add one-half cup baking soda. If the mixture fizzes, the dirt is acidic.

This MedLab Diagnostics Litmus-Based pH Test Kit measures acidity in your water. It’s really easy to use—just dip a litmus ...

Seasoned growers prefer our pH Test Kit to expensive electronic meters because of its reliability and ease-of- use EASY TO USE: To use, simply fill a test tube halfway with nutrients, add a few ...

Contains one (1) API FRESHWATER MASTER TEST KIT 800-Test Freshwater ... Accurately monitors 5 most vital water parameters levels in freshwater aquariums: pH, high range pH, ammonia, nitrite ...