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Horiba LAQUA WQ-320PC-K Handheld PH / ORP / Conductivity / Salinity / Resistivity / TDS / Ion / Dissolved Oxygen / Temperature Meter Part# 5700043029 Blaklader Men's Bottoms The polycarbonate lens filters outHoriba LAQUA WQ 320PC K Handheld PH ORP Conductivity Salinity Resistivity TDS Ion Dissolved Oxygen Temperature Meter Part# 5700043029 LAQUA WQ 320 handheld meter to measure pH Conductivity Resistivity Salinity TDS Temperature meter including: 300 PH 2 (pH electrode sensor head with 2 meters cable) and 300 P C (pH sensor cartridge) pH calibration solutions (pH 4. 01, 7. 00, 10. 01 60ml) 300 C 2 (Conductivity electrode sensor head with 2 meters cable)