Ion Meter - Advanced Ion Electrode Method, Accurate Measurement Range 23 To 2300 Ppm, Temp. Compensation, Auto Hold, Ip67 Water/dust Proof

Product Description Sodium Ion (Na ) Potassium Ion (K ) Nitrate Ion (NO-3) Calcium Ion (Ca2 ) Model B-722 B-731 B-743 B-751 Measurement Principle Ion electrode method Ion electrode method Ion electrode method Ion electrode method Minimum Sample Volume 0.3mL (0.05mL with Sampling Sheet B) 0.3mL (0.05mL with Sampling Sheet B) 0.3mL (0.05mL with Sampling Sheet B) 0.3mL (0.05mL with Sampling Sheet B) Measurement Range 23 to 2300 ppm(mg/L) 10(-3) TO 10(-1)moI/L) 39 to 3900 ppm (mg/L) (10(-3) to 10(-1)moI/L) 20 to 2000kg/10a (Soil/Water sampling ratio 1:5) NO3 : 62 to 6200 ppm (mg/L) (10(-3) to 10(-1)moI/L) NO3-N:14 to 1400 ppm (mg/L) 40 to 4000 ppm (mg/L) (10(-3) to 10(-1) moI/L) Resolution: 0 to 1.0 ppm 0 to 99 ppm 100 to 990 ppm 1000 to 9900 ppm 0.1 ppm 1 ppm 10 ppm 100 ppm Calibration Two-Point Two-Point Two-Point Two-Point Accuracy 10% of reading value 10% of reading value 10% of reading value 20% of reading value Compensation Setting Multiplication (0.01 to 9.90) or known factor(-1000 to 1000) Multiplication (0.01 to 9.90) or known factor(-1000 to 1000) Multiplication (0.01 to 9.90) or known factor(-1000 to 1000) Multiplication (0.01 to 9.90) or known factor(-1000 to 1000) Functions Auto range change/Temp. Compensation/IP67 Water/ Dust Proof/ Auto Hold/ Automatic Power off (15 minutes) Auto range change/Temp. Compensation/IP67 Water/ Dust Proof/ Auto Hold/ Automatic Power