Backed by proprietary sensor technologies and materials from Switzerland, Apera Instruments LabSen 763 Blade Spear pH electrode adopts durable food-grade stainless steel body, solid electrolyte, and long-life reference system, making the probe hard to be contaminated and maintenance-free. Ideal for professional meat pH measurement. This is a replacement electrode for Apera Instruments SX811-BS portable pH meter; also compatible with other Apera meters including PH700, PH800, PC800, PH820, PC820, PH910, PC910, PH950, PC950, PH9500, PC9500. The product is CE and RoHS certified, and is manufactured under an ISO 9001: 2015 certified quality system.