These combination electrodes withstand the most demanding field conditions—the semi-domed tip protects the pH bulb and ensures a quick response when taking measurements in harsh and dirty environments. Easy-to-clean electrodes feature an impact-resistant epoxy body for further protection from the elements. The large, annular ceramic reference junction and sealed cross-linked polymer reference resist clogging.

Operating range is from 0 to 14 pH. Electrodes measure 110 mm L x 12 mm dia and withstand temperatures up to 212°F (100°C). All models have BNC connectors.