Description Introduction: The HI99121 specialized probe features a rugged conical tip, open junction design, and a glass body making it ideal for measuring the HI99121 pH of soil directly or after preparation of a soil slurry with deionized water ±0.02 pH accuracy Includes a plastic auger to break through harder soils. Specialized for the direct pH measurement of soil. Specification Detail sku HI99121 pH Range -2.00 to 16.00 pH / -2.0 to 16.0 pH pH Resolution 0.01 pH / 0.1 pH pH Accuracy @ 25°C / 77°F ±0.02 pH / ±0.1 pH 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) mV Range ±825 mV (pH-mV) mV Resolution 4 mV mV Accuracy ±1 mV (pH-mV) Temperature Range -5.0 to 105.0 °C/23.0 to 221.0 °F Temperature Resolution 0.1 °C/0.1 °F Temperature Accuracy @ 25°C / 77°F ±0.5 °C up to 60 °C ±1.0 °C outside ±1.0 °F up to 140 °F ±2.0 °F outside Temperature Compensation Automatic -5.0 to 105.0 °C/23.0 to 221.0 °F Power Supply 1.5V AAA batteries (3 pcs.) Power Consumption approx. 1400 hours of continuous use Environment 0 to 50°C (32 to 122°F) RH max 100% Dimensions s 154 x 63 x 30 mm (6.1 x 2.5 x 1.2in.) Weight 199 g (6.91 oz.) with batteries 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 Warranty 2 years Recommended 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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