www.hannainst.com | New xix HI2620 • HI2621 pH/ORP Benchtop Meters HI2620 measures pH and ORP utilizing Hanna’s unique digital electrodes while the HI2621 adds datalogging and extended pH resolution capabilities. See page 2.20 HI2630 • HI2631 Conductivity Benchtop Meters HI2630 measures EC and TDS utilizing Hanna’s unique digital electrodes while the HI2631 adds datalogging capabilities and salinity measurement and calibration. See page 5.16 HI2640 • HI2641 Dissolved Oxygen Benchtop Meters HI2640 measures dissolved oxygen (ppm and % saturation) utilizing Hanna’s unique digital electrode while the HI2641 adds datalogging capabilities. See page 6.14
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