Single-usepH sensors are sensors for pH measurement that are designed to be integrated into single-use process devices by the device manufacturer. Single-usepH sensors from METTLER TOLEDO measure pH with a potentiometric single-use sensor which has been factory calibrated by METTLER TOLEDO in common buffer solutions (zero point and slope). These disposable pH sensors can be used in a broad range of applications that require single-use bags including cell culture, harvesting, fermentation, media/buffer preparation, virus inactivation and purification steps. With their robust design for enhanced protection, METTLER TOLEDO single-usepH probes ensure a significantly longer shelf life while offering an output signal identical to that of a reusable sensor for highly efficient integration. All wetted polymer materials are made of USP 88 VI certified materials.