Hanna Instruments 1500 PPM@25C Calibration Solution 20mL, case of 25

The conductivity solutions are made of high quality Potassium Chloride with different strengths. The solutions are standardized with a conductivity meter, calibrated by high purity NIST 999 Potassium Chloride in deionized water. The concentration is also confirmed by NIST 2201 Standardized Silver Nitrate solution. 1,500 ppm (mg/l) at 25C