HI4016-45 is a 500 mL bottle of storage solution made specifically for Hannas sodium ion selective electrode (ISE).  Before using the FC300B sodium electrode for the first time, or if reactivating it after storage, the electrode should be conditioned, soaked in storage solution, and then tested. The sodium ISE can also remain in HI4016-45 storage solution for long and short term storage purposes.

• Clearly marked bottle with lot number and expiration date