We are always adding New Items in Our Hot Deals Tab!!! Edit My Account | Order History | View Shipping Costs | View Shopping Cart | Login Shopping Categories > Analyzers > Sensors: Click Here Analytical Sensor PSR-11-39-JD1 replaces Max-250E You are purchasing one Analytical sensor You are purchasing a PSR-39-JD1 cell For use with the Maxtec OM-25AE Piranha's Price: $80.00