HI 99104 Educational pH Tester HI 99104 is an ideal pocket tester for educational purposes. Designed with a 0.01 pH resolution and two point manual calibration through easy to reach trimmers, it immediately displays pH variations to reflect the smallest change in the sample. Unlike conventional testers, HI 99104 has a long and slim stem, ideal for measurements in small samples or test tubes. HI ... Read More »

HI 99104 Educational pH Tester HI 99104 is an ideal pocket tester for educational purposes. Designed with a 0.01 pH resolution and two point manual calibration through easy to reach trimmers, it immediately displays pH variations to reflect the smallest change in the sample. Unlike conventional testers, HI 99104 has a long and slim stem, ideal for measurements in small samples or test tubes. HI ... Read More »