A high-quality set of calibration standards that allows users to validate the Free Chlorine Checker.
Includes one sealed cuvette for zero ppm free chlorine and one cuvette that is tinted to an equivalent 1.00 +/- 0.05 ppm free chlorine sample @ 25°C.
Calibration Check Set for Free Chlorine Checker
- Supplied with Certificate of Analysis
- Reusable with long shelf life stability