Calibration Solution - pH 4 and 7 (20 mL)

Description   Good calibration will ensure reliable measurements. pH 7 is the most frequently used pH buffer. This solution is ideal for ensuring accurate results when testing pH levels of acidic samples. 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 5 packets of pH 4.01 and 5 packets of pH 7.01 calibration solution. Each packet measures 20 mL.   Details   SKU: HI 77400P Weight: 0.90 lbs Price: $ 12.30   Add to Cart Estimate delivery