HM Digital 1000 ppm TDS Calibration Solution, 3 oz (90 ml)

A 3 oz (90 ml) bottle of 1000 ppm NaCl calibration solution for checking and recalibrating a TDS or EC meter. It comes in a light HDPE bottle sealed with a coated foam liner.

Tip: pour a little into a clean cup to calibrate and throw it out afterward. Putting the probe into the bottle contaminates the rest.

Pairs with: HM Digital TDS-3 Handheld TDS meter, HM Digital COM-80 EC/TDS/Temp Tester.