The HI97700-11 Low Range Ammonia Cal Check standards provides a simple solution to calibrating and validating the HI97700 Ammonia Low Range Photometer. This high quality set of standards is manufactured in our state-of-the-art facility and comes supplied with a Certificate of Analysis. The Certificate of Analysis provides the lot number, reference values and expiration date for traceability.
Supplied with Certificate of Analysis
- Standard value of 1.50 ±0.01 mg/L ammonia (as NH3-N) @ 25℃
- Reusable with long shelf life stability









