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The HI98191 is a rugged, portable pH/ORP/ISE meter with the performance and features of a benchtop meter. This professional, waterproof meter complies with IP67 standards and measures pH, ORP, ISE, and temperature. The HI98191 is supplied with all necessary accessories to perform a pH/temperature measurement packaged into a durable carrying case.
0.001 resolution in pH mode only
| pH Range |
-2.0 to 20.0 pH; -2.00 to 20.00 pH; -2.000 to 20.000 pH |
| pH Resolution |
0.1 pH; 0.01 pH; 0.001 pH |
| pH Accuracy |
±0.1; ±0.002 pH |
| pH Calibration |
up to five point calibration, seven standard buffers available (1.68, 4.01, 6.86, 7.01, 9.18, 10.01, 12.45) + five custom buffers |
| mV Range |
±2000 mV |
| mV Resolution |
0.1 mV |
| mV Accuracy |
±0.2 mV |
| ISE Range |
from 1.00 E⁻⁷ to 9.99 E¹⁰ concentration |
| ISE Resolution |
3 digits 0.01; 0.1; 1; 10 concentration |
| ISE Accuracy |
±0.5% of reading (monovalent ions), ±1% of reading (divalent ions) |
| ISE Calibration |
up to five point calibration, six standard solutions available (0.1, 1, 10, 100, 1000, 10000 ppm) |
| Temperature Range |
-20.0 to 120.0°C (-4.0 to 248.0°F) |
| Temperature Resolution |
0.1°C (0.1°F) |
| Temperature Accuracy |
±0.4°C (±0.8°F) (excluding probe error) |
| Temperature Compensation |
manual or automatic from -20.0 to 120.0°C (-4.0 to 248.0°F) |
| Slope Calibration |
from 80 to 110% |
| Electrode/Probe |
HI72911B Titanium body, pH electrode with internal temperature sensor, BNC connector and 1 m (3.3’ cable) |
| Input Impedance |
10¹² Ohms |
| Log-on-demand |
300 samples (100 each range pH, mV and ISE) |
| PC Connectivity |
opto-isolated USB with optional HI 92000 software and micro USB cable |
| Battery Type/Life |
1.5V AA batteries (4) / approximately 200 hours of continuous use without backlight (50 hours with backlight) |
| Auto-off |
user selectable: 5, 10, 30, 60 min or can be disabled |
| Environment |
0 to 50°C (32 to 122°F); RH 100% (IP67) |
| Dimensions |
185 x 93 x 35.2 mm (7.3 x 3.6 x 1.4”) |
| Weight |
400 g (14.2 oz.) |
| Ordering Information |
HI98191 is supplied with HI72911B titanium body pH electrode, HI7004M pH 4.01 buffer solution (230 mL), HI7007M pH 7.01 buffer solution (230 mL), HI700601 electrode cleaning solution sachet (2 x 20 mL), 100 mL plastic beaker (2), 1.5V AA batteries (4), HI92000 PC software, HI920015 micro USB cable, instruction manual, quick start guide, instrument quality certificate, and HI720191 hard carrying case. |
| Warranty |
2 years (probe 6 months) |
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