Backed by proprietary Swiss sensor technology and materials, Apera LabSen 753 Spear pH/Temp. electrode is designed for professional pH measurement of food samplings, such as cheese, dough, meat products, fruit, sushi rice, vegetables, etc. The sturdy spear glass tip makes direct pH testing of solid samplings easier than ever. Minimal maintenance is needed thanks to the single-pore junction and polymer electrolyte. The Long-life reference system improves the stability of the reference electrode and extends the service life. This electrode is compatible with other Apera SX811-SS, PH700, PH800, PH820, PH850, PH8500, PH910, PH950, PH9500.