HI 253
pH/ISE Bench Meter with GLP and 3-point pH Calibration
HI 253 and HI 254 pH/ORP bench meters are ideal for very accurate and precise measurements in all laboratory settings. Both meters can store up to 50 data sets in non-volatile memory which can be downloaded to a PC.
These instruments also have GLP features so, at any time, the user can recall the calibration data.
HI 253 can perform ion-selective (ISE) measurements directly in ppm. Chose from our newly developed line of specific ion sensors for your specific application.
pH calibration with HI 254 can be customized with up to 5 points – selected from 7 memorized buffers – to provide a very accurate calibration curve even when testing difficult samples, where very wide differences in pH may occur during the same process.
HI 253 and HI 254 are each supplied with a pH electrode, temperature probe for automatic compensation during pH measurements and ready-to-use calibration solutions.
Order Information:
HI 253 is supplied with HI 1131B pH electrode, HI 7669/2W temperature probe, pH 4 and pH 7 buffer sachets (20mL each), electrode refilling solution, electrode holder, 12 Vdc power adapter and instructions.
- Specifications
- Included Reagents
- Accessories
- Downloads
Range | pH | -2.0 to 16.0 pH; 2.00 to 16.00 pH; -2.000 to 16.000 pH |
Range | mV | ±699.9 mV; ±2000 mV |
Range | Selective Ions | 0.001 to 19999 ppm |
Range | Temperature | -9.9 to 120.0°C |
Resolution | pH | 0.1 pH; 0.01 pH; 0.001 pH |
Resolution | mV | 0.1 mV (±699.9 mV); 1 mV (±2000 mV) |
Resolution | Selective Ions | 0.001 (0.001 to 9.999) ppm 0.01 (10 to 99.99) ppm 0.1 (100 to 999.9) ppm 1 (1000 to 19999) ppm |
Resolution | Temperature | 0.1°C |
Accuracy | pH | ±0.1 pH; ±0.01 pH; ±0.002 pH |
Accuracy | mV | ±0.2 mV (±699.9 mV); ±1 mV (±2000 mV) |
Accuracy | Selective Ions | ±0.5% |
Accuracy | Temperature | ±0.4°C |
Relative mV Offset Range | ±2000 mV | |
pH Calibration | automatic, 1, 2 or 3 point with 5 memorized values (pH 4.01, 6.86, 7.01, 9.18, 10.01) |
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ISE Calibration | automatic, 1 or 2 point (0.1, 1, 10, 100, 1000 ppm) | |
Temperature Compensation | Automatic (with HI 7669/2W probe) or manual from -9.9 to 120°C | |
pH Electrode | HI 1131B, glass-body, double junction, refillable, BNC connector, 1 m (3.3′) cable (included) |
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Temperature Probe | HI 7669/2W with 1 m (3.3′) cable (included) | |
Input Impedance | 1012 Ohm | |
PC Connection | RS232 opto-isolated serial port | |
Power Supply | 12 Vdc adapter (included) | |
Environment | 0 to 50°C (32 to 122°F); RH max 95% | |
Dimensions | 240 x 182 x 74 mm (9.4 x 7.2 x 2.9") | |
Weight | 1.1 kg (2.4 lb.) |
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