pH Sensor InPro4260/120/PT1000 Back Catalog number: 52002987 Availability: In the manufacturer's stock Price on request - + Recommended MA919B/1 Glass pH electrode, refillable, BNC, 1m Price on request MI56P pH/Temp probe for pH55 and pH56 Price on request MA991B/1 Combined glass pH electrode MA991B/1 Price on request