Hanna Instruments Checker pH Pen
The pH Checker series supplies users with fast and accurate readings from 0 to 14 pH with a resolution of 0.01 pH. This compact tester features an easy to read LCD and simple to perform two point calibration.
The pH electrode of the Checker can be easily replaced. You only need to unscrew the electrode from the meter body and screw on a new one.
The Checker is fast, accurate, lightweight and with 3000 hours of battery life, you don't have to worry about frequent battery replacement.
Reverse Osmosis Membrane Cartridge.
Carbon Block Water Filter reduces chlorine taste and odor.
10 micron filtration.
No release of carbon fines.
The resin replacement cartridges are easy to install and virtually hassle free. You can change the resin cartridges in less than 5 minutes. \
GAC Replacement for RO/DI unit