pH Sensor InPro4260i/SG/225 Back Catalog number: 52005382 Availability: In the manufacturer's stock Price on request - + Recommended MA917B/1 Comb glass pH electrode, DJ, refill, BNC, 1m Price on request MA913B/3 Combined Epoxy pH electrode MA913B/3 Price on request SE300 Double junction orp platinum electrode SE300 Price on request