| Feature |
One-point (pH7) Calibration, Auto-Calibration(Calibration value backup), Waterproof, Auto-shut off, Direct measuremt |
Two-point (pH7, pH4) Calibration, Auto-Calibration(Calibration value backup), Waterproof, Auto-shut off, Direct measuremt |
U.S. Standard based Two-point (pH7, pH4) Calibration, Auto-Calibration(Calibration value backup), Waterproof, Auto-shut off, Direct measuremt |