ISE Electrode,Calcium,Epoxy,BNC Sensor No, Max. Pressure Ambient, For Use With YSI TruLab 1320; YSI MultiLab 4010-2 and 4010-3 When Used with BNC Adapter, Shelf Life 12 mo, Junction Double, Recommended Use Laboratory, Includes 1 Module, Manufacturers Warranty Length 9 mo.