HI-700-11 is a high-quality set of calibration standards that allow for users to validate the Ammonia Low Range Checker®HC – HI-700. The HI-700-11 includes one sealed cuvette for zero ppm ammonia and one cuvette that is tinted to an equivalent 1.50 +/- 0.10 ppm ammonia sample @ 25°C. 

Ammonia check calibration check set for HI-700 Pocket checker

£25.08Price