HI4001-45 is a 500 mL bottle of conditioning and storage solution made specifically for Hannas ammonia gas sensing ion selective electrodes (ISEs).  The internal glass pH element of the ammonia ISE requires conditioning to ensure the sensing glass remains hydrated. The ammonia ISE can also remain assembled and stored in the HI4001-45 solution for short term storage purposes.

• Clearly marked bottle with lot number and expiration date