pH Meter & pH Tester Hanna Instrument
pHep®4 pH/Temperature Tester - HI98127
Specifications
pH Range	-2.0 to 16.0 pH
pH Resolution	0.1 pH
pH Accuracy	±0.1 pH
Temp. Range	-5.0 to 60.0 °C / 23.0 to 140.0 °F
Temp. Resolution	0.1 °C / 0.1 °F
Temp. Accuracy	±0.5 °C /±1 °F
pH Calibration	automatic, at one or two points with two sets of standard buffers ( pH 4.01 / 7.01 / 10.01 or pH 4.01 / 6.86 / 9.18)
Temp. Compensation	automatic
Battery Type/Life	1.5V (4) / approx. 300 hours of continuous use; auto-off after 8 minutes of non-use
Environment	-5 to 50 °C ( 23 to 122 °F ); RH max 100 %
Dimensions	163 x 40 x 26 mm ( 6.4 x 1.6 x 1.0’’ )
Weight	100 g ( 3.5 oz.)
Ordering Information	HI98127 ( pHep®4 ) is supplied with HI73127 pH electrode, HI73128 electrode removal tool, batteries and instructions.
pHep® pH Tester - HI98107
Specifications
pH Range	0.0 to 14.0 pH
pH Resolution	0.1 pH
pH Accuracy	±0.1 pH
pH Calibration	Manual, two points
Battery Type/Life	1.5 V ( 4 ) / approximately 700 hours of continuous use
Environment	0 to 50 °C ( 32 to 122 °F ); RH max 95 %
Dimensions	175 x 41 x 23 mm ( 6.9 x 1.6 x 0.9’’ )
Weight	95 g ( 3.4 oz.)
Ordering Information	HI98107 ( pHep® ) is supplied with protective cap,calibration screwdriver, batteries and instructions
Portable pH/mV Meter - HI8424
Specifications
pH Range	-2.00 to 16.00 pH
pH Resolution	0.01 pH
pH Accuracy	±0.01 pH
pH Calibration	automatic, at one or two points with three standard buffers ( 4.01, 7.01,10.01 )
mV Range	±699.9 mV; ±1999 mV
mV Resolution	0.1 mV; 1 mV
mV Accuracy	±0.2 mV; ±1 mV
Temp. Range	-20.0 to 120.0 °C / -4.0 to 248.0 °F
Temp. Resolution	0.1 °C / 0.1 °F
Temp. Accuracy (@ 25°C/77°F)	±0.4 °C; ±0.8 °F
Temp. Compensation	Automatic from -20.0 to 120.0 ºC ( -4.0 to 248.0 ºF ) or manual without temp. probe connected
pH Electrode	HI1230B PEI body pH probe with BNC connector and 1 m (3.3’) cable ( included )
Temperature Probe	HI7662 stainless steel temperature probe with 1 m ( 3.3’ ) cable ( included )
Slope Calibration	From 75 to 110 % / ±1 pH
Input Impedance	10¹² Ohms
Battery Type / Life	9 V / approximately 150 hours of continuous use; auto-off after 20 minutes of non-use ( can be disabled )
Environment	0 to 50 °C (32 to 122 °F ); RH max 100 %
Dimensions	164 x 76 x 45 mm (6.5 x 3.0 x 1.8”)
Weight	180 g (6.3oz.)