Features
Technical Attributes
Type: | pH | Conductivity (EC) | Salt 11 EC | Sodium Ion (NA+) | Calcium Ion (Ca2+) |
Model: | pH-22 | B-771 | B-721EC | B-722 | B-751 |
Measurement Principle: | Glass electrode method | 2 AC bipolar | 2 AC bipolar | Ion electrode method | |
Min Sample Volume: | 0.05 mL*2 or 0.1 mL more*2 | 0.12 mL or more | 0.12 mL | 0.05 mL *2, 0.3 mL or more | |
Measurement Range: | 2 to 12 pH | Conductivity: 0 to 19.9mS/cm (0 to 1.99S/m) Salt: 0 to 1.1% TDS: 0to 9900 ppm | 0.0 - 100.0 g/L salinity 0.00 to 10.00% | 23 to 2300 ppm (mg/L) (10-3 to 10-1 mol/L) | 40 to 4000 ppm (mg/L) (10-3 to 10-1 mol/L) |
Calibration: | Three-point | Two-point | |||
Accuracy*6: | ±0.1 pH | ±2%F.S. ±1 digit (for each range)*7 | ±10% of reading value | ±20% of reading value | |
Functions: | Temp compensation - Auto hold - IP67 Water/Dust proof *8 | Salt/TDS Measurement - Temp conversion (2%/°C fixed) - Auto hold - IP67 Water/Dust proof *8 | Auto stable Automatic Power Off (30 min) | Temp Compensation - Auto hold - IP67 Water/Dust proof *8 | Temp Compensation - Auto hold - IP67 Water/Dust proof *8 |
Operating Temp/Humidity: | 5 to 40°C, 85% or less in relative humidity (no condensation) | ||||
Power: | CR2032 batteries (x2) | ||||
Dims/Mass: | 164 mm x 29 mm x 20 mm (excluding projections) / Approx. 50g (meter only without batteries, B771 approx 45 g) 6.5" x 1.1" x 0.8" | ||||
*1 Special application packages for crop measurement (B-741) and soil measurement (B-742) are also available *2 Smaller amount (0.05 mL or more) can be measured with the sampling sheet B. (Please close the light shield cover. If a sample that contain particulate, please use "Sampling sheet holder" (sold Separately)) *3 With soil/water sampling ratio of 1:5. *4 When the measured value is out of the measurement range, the displayed value blinks. It should be used only as a guide *6 Repeatability in measurement of a standard solution after calibration using it. *7 -±5 µS/cm (0 to 199 µS/cm) -±0.05 mS/cm (0.20 to 1.99 mS/cm) - ±5 mS/cm (20 to 199 mS/cm) *8 IP67: no failure when immersed in water at a depth of 1 meter for 30 minutes. But the product can not be used underwater. |
Procedure
Easy, three-step measurement, follow simple, good testing procedures for accurate and dependable results: Calibrate correctly, avoid mixing samples and standards and always keep the sensor clean
* Sensors will need to be replaced after approx.1500 measurements or when calibration cannot be completed. Sensors are sold separately and are easily removed and replaced
Delivery Content
12873 - pH Meter (pH-22) - Meter, electrode, 14mL 7 Buffer, 14mL 4 Buffer, case
10869 - Conductivity Meter (B-771) - Meter, electrode, 14mL 1.41mS/cm standard, case
15014 - Salt 11 EC Meter B-721EC - Meter, electrode, 2 CR2032 batteries, 1 pipette, Instruction manual, Quick manual, 2 14mL Sodiumchloride Std. solutions, 14mL Conditioning solution, carry case
15098 - Sodium Ion Meter B-722 - Meter, electrode, 14mL 2000ppm, 14mL 150 ppm, case
15097 - Calcium Ion Meter B-751 - Meter, electrode, 14mL 2000ppm, 14mL 150 ppm, case
Accessories