Autocalibration function recognizes standards and is user-selectable for either one- or two-point calibrations;Auto range change;Temperature conversion;IP67 waterproof;Auto hold

• HORIBA LAQUAtwin 3200456569 Model B-743 Compact Nitrate Ion Meter, Measurement Range 62-6200 ppm

HORIBA LAQUAtwin 3200456569 Model B-743 Compact Nitrate Ion Meter, Measurement Range 62-6200 ppmHoriba Instruments