pH Solution Size:1 Gallon and a 1/8" NPT vent/drain

and a 1/8" NPT vent/drain connection is built in

Used with: pHotoFlex STD

allowing users to effortlessly switch between monitoring different gases on different days by simply replacing the sensors

It adds internal battery power

and stainless steel extensions let you reach depths up to 12 ft or more depending on lithology

pH Solution Size:1 Gallon and a 1/8" NPT vent/drainpH calibrating buffers are formulated with NIST specified ingredients including EPA registered broad spectrum antimicrobials to assure long life free of mold and bacterial growth. These are color coded for easy recognition. Accuracy is referenced to NIST Standard Reference Materials 0. 01 pH @ 25C for routine buffers.