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.