Desiccant Lined Tube Provides Maximum Moisture Protection;Includes Instruction Booklet On How To Correct Unsafe Water Conditions;Just dip & read;Pond care 5 in 1 multi colored dip strips;Five different ways to protect fish from dangerous water conditions;Includes a stay dry tube that offers superior moisture protection;Accurate and easy to use;Measures 5 important parameters: pH, Nitrite, Nitrate, carbonate hardness, and general hardness