Ion Meter

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