The HI98100 Checker Plus is the next generation of the original Hanna Checker pH tester. The Checker is the most popular pH meter in the world with over 1 million meters used since its introduction in 1991. From students to researchers, the Checker has been helping people with their pH measurement as a meter that is simple to use and operate
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The HI98100 Checker Plus pH tester has been designed with many advanced features while maintaining the look and feel of the original Checker.
The Checker Plus now offers automatic calibration to one or two points, automatic buffer recognition, calibrated buffer tags, stability indicator, low battery indicator, and selectable automatic shut off.
The Checker plus still maintains the iconic pentagon design with a probe that measures 103 mm in length and tapered to a 8 mm diameter making it ideal for test tubes and vials.
0.0 to 14 pH
automatic, one or two points with three standard buffers available (pH 4.01, 7.01 and 10.01)
-10.0 to 60.0°C / 14.0 to 140.0°F
0.1°C / 0.1°F
±0.4 °C / ±0.8 °F
HI1271 pH electrode with screw type connector (included)
8 minutes, 60 minutes, or can be disabled
1.5V CR2032 (1) / approximately 1000 hours of continuous use
0 to 50°C (32 to 122°F); RH max 95%
50 x 174 x 21 mm (2 x 6.8 x 0.9”)
50 g (1.8 oz.)
50 g (1.8 oz.)
HI98100 is supplied with HI1271 pH electrode, HI70004 pH 4.01 buffer solution sachets (2 x 20 mL), HI70007 pH 7.01 buffer solution sachets (2 x 20 mL), HI700601 electrode cleaning solution sachets (2 x 20 mL), instruction manual, instrument quality certificate and plastic carrying case.