Good calibration will ensure reliable measurements. pH 7 is the most frequently used pH buffer.
Hanna pH buffers are made of Potassium Dihydrogen Phosphate and Disodium Hydrogen Phosphate and are standardized with a pH meter that is calibrated to NIST primary standard buffer solutions (NIST 186Ie & 186IIe and NIST 158g S.R.M.).
This kit contains 10 packets of pH 7.01 buffer solution. Each packet measures 20 mL. |