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Easily and inexpensively extend the life of your Hach differential sensors. By periodically replacing the salt bridge and standard cell solution, you can maximize the life of your Hach Differential Sensors. For optimum performance, Hach recommends that differential sensor salt bridges be replaced every 6 months.

• Lowers Lifetime Cost of Process pH Sensors
• Salt bridge is field-replaceable
• Can be stored in the shipping solution until needed