pH meter or testers are used for the determination of acidity or alkalinity level of the sample. You can measure pH of many solutions right from water to semi solids like cheese and to solid like meat and even skin. HANNA Instruments wide range of specialized pH meters and testers are made for specific samples. Highly accurate and durable, these testers are easy to calibrate and use.
You need to calibrate them using 4.01pH buffer solution, 7 pH, 10.01pH and 12.45pH buffer Solutions before actual measurement.