HM Digital COM-80 + PH-80 Meter COMBO PH TDS EC PPM Pocket Tester
HM Digital PH-STOR pH Electrode Storage Solution for Use with PH-200 or PH-80, 60cc Volume, 60 ml.
HM Digital PH-BUF pH Buffer Variety Pack, 12x100ml 891144 000069
*** Contents: 6 packets of 4.0 pH and 6 packets of 7.0 pH, each pack makes 100ml pH buffer.
For optimal performance, re-calibrate your pH meters on a regular basis. HM Digital's pH buffer solution comes in powder form, so it's lightweight, takes up very little space, is inexpensive and has an indefinite shelf life. Make only what you need, when you need it.
Spare 1.5 V Battery for HANNA, HM Digital and Milwaukee Pocket pH TDS ORP Testers, Pack/10
Replacement button battery batteries for Pen style Tester Meter