Extech PH103  

Extech PH103: Tripak Buffer Pouches (4, 7 and 10pH plus rinse solution)

Pre-made convenient calibration solutions for pH meters

Convenient, pre-measured pH calibration solutions for your meter. Rinsing solution used for cleaning off the pH electrode before and after taking measurements to prevent contamination (6 pouches of pH4 solution, 6 pouches of pH7 solution, 6 pouches of pH10 solution, 2 pouches of rinse solution).