Hanna HI98131 GroLine pH EC TDS Temperature Tester - Waterproof Pocket Meter push-button meter The system is entirely gravity-fed

The system is entirely gravity-fed — simply fill the upper reservoir and gravity draws water through all five filtration stages into the lower reservoir

100-9999: 1 ppm/µS

Alexapure Pitcher Replacement Filters – 4-Pack (8 Certified Filters)

Accepts any Series IV filter — swap for the best filter for your activity

Hanna HI98131 GroLine pH EC TDS Temperature Tester - Waterproof Pocket Meter push-button meter The system is entirely gravity-fedThe HI98131 is a slim, lightweight, and waterproof pocket tester that measures pH, conductivity (EC), TDS (ppm), and temperature. Simple, two button meter operation and advanced features, including a selectable EC to TDS conversion factor (0. 5 500 ppm and 0. 7 700 ppm). for your essential testing. All measurements in a single, hassle free tester. Quick Cal solutions to calibrate pH and conductivity all at once with a single solution. Perfect for