Specification of HI99121 Direct Soil PH Meter
HI99121 Models and Compatible Accessories
Old HI99121 (Left)
- Uses the HI1292D pH probe with DIN Connector
- Compatible with the HI710023 Shockproof Boot
New HI99121 (Right)
- Uses the HI12923 pH probe with Quick DIN Connector
- Compatible with the HI710028 Shockproof Boot
*The new Quick DIN probe connection is compatible with the old body design, however, the old DIN probe connections are not compatible with the new body design.
Specifications
pH Range |
-2.00 to 16.00 pH |
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pH Resolution |
0.01 pH |
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pH Accuracy (@25ºC/77ºF) |
±0.02 pH |
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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) |
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pH-mV Range |
±825 mV (pH-mV) |
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pH-mV Resolution |
1 mV |
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pH-mV Accuracy |
±1 mV |
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Temperature Range |
-5.0 to 105.0°C / 23.0 to 221.0°F |
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Temperature Resolution |
0.1°C / 0.1°F |
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Temperature Accuracy (@25ºC/77ºF) |
±0.5°C (up to 60°C); ±1.0°C (outside) / ±1°F (up to 140°F); ±2.0°F (outside) |
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Temperature Compensation |
automatic from -5.0 to 105.0ºC (23 to 221ºF) |
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Electrode/Probe |
HI12923 glass body, pre‑amplified pH electrode for soil measurement with internal temperature sensor, DIN connector and 1 m (3.3’) cable (included) |
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Battery Type / Life |
1.5V AAA (3 pcs.) approx. 1400 hours of continuous use |
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Environment |
0 to 50°C (32 to 122°F); RH max 100% |
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Dimensions |
154 x 63 x 30 mm (6.1 x 2.5 x 1.2”) |
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Weight |
196 g (6.91 oz.) |
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Ordering Information |
Each meter is supplied complete with: • HI12923 pH/temperature probe • pH 4.01 & 7.01 Buffer sachet • HI700663 electrode cleaning solution for soil deposits (1 sachet) • HI700664 electrode cleaning solution for humus deposits (1 sachet) • HI7051M soil preparation solution • HI721319 ground auger • 100 mL beaker (1 pc.) • Alkaline batteries: 1.5V AAA (3 pcs.) • Rugged carrying case • Calibration certificate of meter • Calibration certificate of probe • Instruction manual |
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Warranty |
2 years (probe 6 months) |
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