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Pure Water Tester (HI98308) - Hanna Instruments
Hanna Instruments$89.99The HI98308 Pure Water tester is a rugged and reliable pocket-sized tester that offers quick and accurate readings. The HI98308 Pure Water tester features graphite electrodes to reduce polarization... -
Waterproof Pocket pH Tester with 0.1 Resolution - pHep® (HI98107) - Hanna Instruments
Hanna Instruments$59.99The HI98107 pHep® is an easy-to-use pH water tester that makes monitoring water quality simple. This accurate pH tester features 0.1 resolution with automatic two-point calibration and...