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HI98131 looks a lot like the "black combo pen" you may be familiar with. We improved that black combo tester and made this GroLine version. What did we improve?
While the black combo tester is a well known Hanna "flagship" product, the new improved HI98131 white GroLine combo tester is much better for growers to use and retailers to stock.
HI98131 GroLine Waterproof Combo Tester
HI73127 Replacement Electrode for HI98131, HI98129, HI98127
HI70300-050 500 mL Storage Solution
HI5036-050 500 mL GroLine QuickCal Calibration Solution
HI7007-050 500 mL 7.01 pH Calibration Solution
HI7004-050 500 mL 4.01 Calibration Solution
HI7061-050 500 mL Cleaning Solution
HI98131 Combo Tester is waterproof and measures pH/EC/PPM/Temp. This pocket sized tester does everything that the HI9814 Combo Meter can do.
3 sensors in a single meter
pH electrode with extractable junction
Amperometric EC/TDS sensor
Exposed temperature probe for faster EC/TDS readings
Wide pH Range
Selectable EC to TDS conversion factor
BEPS (Battery Error Prevention System
0.00 to 14.00 pH
automatic, at one or two points using standard buffers (pH 4.01, 7.01,10.01); one point calibration using quick calibration solution
0.00 to 6.00 mS/cm
0 to 3000 ppm (500 CF); 0 to 3999 ppm (700 CF)
10 ppm (mg/L)
0.0 to 60.0°C / 32.0 to 140.0°F
0.1°C / 0.1°F
pH: automatic; EC/TDS: automatic with β set at 1.9%/°C
automatic, one-point at 1.41 mS/cm or 5.00 mS/cm; one point calibration using quick calibration solution
TDS Conversion Factor
0.5 (500 ppm) or 0.7 (700 ppm)
1.5V (4) / approx. 100 hours of continuous use, auto-off after 8 minutes of non-use
after 8 minutes, 60 minutes, disabled
0 to 50°C (32 to 122°F); RH max 100%
163 x 40 x 26 mm (6.4 x 1.6 x 1.0’’)
100 g (3.5 oz.)
HI98131 is supplied with HI73127 pH electrode, HI73128 electrode removal tool, batteries (4), instructions and quality certificate.
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