VTSYIQI Water Hardness Tester Portable Water Hardness Meter with Calibration Liquids Concentration 0.05~200 mmol/L Temperature 0 to 105°C USB Interface 500 Data Memory for Measuring Calcium and Magnesium Ion Concentration in Water Samples

VTSYIQI Handheld Water Hardness Meter Water Hardness Tester with Standard Calibration Solutions Accuracy ±1% F.S. Range (Boiler) 0 to 400 mmol/L Range (Ca²⁺) 0 to 8020 mg/L Resolution 0.001, 0.01,0.1,1 Automatic

VTSYIQI Digital Water Hardness Meter Lab Water Hardness Meter with Standard Calibration Liquids Range(Concentration)0.05 to 200 mmol/L(German Degree)0 to 1122°dH Stores Up to 500 Data Sets USB Interface 500 Data Memory for Measuring Calcium etc.

VTSYIQI Portable Water Hardness Meter Analyzer with Standard Calibration Solutions Range(Concentration)0.05 to 200 mmol/L(German Degree)0 to 1122°dH(English Degree)0 to 1404°e(French Degree)0 to 2000°fH(CaCO₃)0 to 19999 mg/L (CaO)0 to 11220 mg/L

VTSYIQI Portable Water Hardness Meter Lab Water Hardness Meter with Standard Calibration Solutions Range 0 to 1122°dH Range 0 to 1404°e Stores Up to 500 Data Sets or Measuring Concentration Calcium and Magnesium Ion Concentration In Water Samples

VTSYIQI Portable Water Hardness Meter Tester with Standard Calibration Liquids Accuracy ±1% F.S. Setup Menu Allows Setting the Number of Calibration Points Automatic temperature compensation Auto-read Function Manual/Auto-read Measurement Endpoint

VTSYIQI Water Hardness Meter Laboratory Water Hardness Meter with Calibration Liquids Range 0 to 1122°dH Range 0 to 1404°e Resolution 0.001, 0.01,0.1,1 Automatic Automatic Temperature Compensation Manual/Auto-read Measurement Endpoint

VTSYIQI Water Hardness Meter Portable Water Hardness Meter with Standard Calibration Solutions Range 0.05 to 200 mmol/L Resolution 0.001, 0.01,0.1,1 Automatic Accuracy ±1% F.S. Selectable Water Hardness Units for Measuring Concentration

VTSYIQI Water Hardness Meter Digital Water Hardness Meter with Standard Calibration Liquids Range 0.05 to 200 mmol/L Manual/Auto-read Measurement Endpoint Stores Up to 500 Data Sets Backlit LCD Display Automatic temperature compensation