Specifications HI99121 pH Range* -2.00 to 16.00 pH / -2.0 to 16.0 pH Resolution 0.01 pH / 0.1 pH Accuracy (@25°C/77°F) ±0.02 pH / ±0.1 pH Calibration Automatic, one or two-point selectable bufferset standard: 4.01; 7.01; 10.01 or NIST: 4.01; 6.86; 9.18 pH-mV Range* ±825 mV Resolution 1 mV Accuracy (@25°C/77°F) ±1 mV Temperature Range* -5.0 to 105.0°C; 23.0 to 221.0°F Resolution 0.1°C; 0.1°F 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) Additional Specifications Temperature Compensation automatic, from -5.0 to 105.0°C (23.0 to 221.0°F) Probe (included) HI12923 glass body, pre-amplified pH electrode for soil measurement with internal temperature sensor, DIN connector and 1 m (3.3’) cable Battery Type / Life 1.5V AAA (3) approx. 1400 hours of continuous use Auto-off user selectable: after 8 min, 60 min, or disabled Environment 0 to 50°C (32 to 122°F); RH max. 100% Meter Dimensions 154 x 63 x 30 mm (6.1 x 2.5 x 1.2”) Meter Mass (with batteries) 196 g (6.91 oz.) Case Ingress Protection Rating IP67 Ordering Information HI99121 is supplied with HI12923 pH/temperature probe with glass body and Quick Connect DIN connector with 1m (3.3’) cable, pH 4.01 and 7.01 Buffer sachets, HI700663 electrode cleaning solution sachet for soil deposits, HI700664 electrode cleaning solution sachet for humus deposits, HI7051M soil preparation solution, HI721319 ground auger, 100 mL beaker, 1.5V AAA batteries (3), calibration certificate of meter, calibration certificate of probe, instruction manual and HI710142 rugged carrying case. * the HI12923 is limited to be used from 0-12 pH and from -5 to 70 °C temperature (23 to 158°F). HI99121 Direct Soil pH Meter with Measurement Kit • Simultaneous pH and temperature measurements on a large dual-line LCD display • User-friendly two button design • Application specific probe • Durable IP67 waterproof casing • Watertight probe connection • Probe condition indicator • Automatic pH calibration at one or two points within two memorized buffer sets (standard or NIST) • On-screen calibration tags • mV measurement for electrode check • Selectable temperature unit (°C or °F) • Auto-off function • Battery life indication and low battery detection • Soil preparation solution · For higher degrees of accuracy, or for stony ground where the electrode may be damaged, use the included HI7051M soil preparation solution The HI99121 is the perfect portable pH meter for soil testing. With the HI99121 and HI12923 direct soil pre-amplified pH and temperature probe, users can test both the pH of soil directly or after preparation of a soil slurry with deionized water. The HI12923 features a conical, rugged tip that can be directly used in soil. A plastic auger is supplied to perforate and loosen the soil prior to sensor measurement. Use this tool to prevent scratching the pH sensitive glass on nutrient crystals or small pebbles. • Optional shockproof silicon rubber boot · Specially designed to protect your instrument from damage or impact HI710028 Orange HI710029 Blue HI710030 Green pH solutions begin on page 2.158; electrode cleaning solutions begin on page 2.172 2 pH 2.105 www.hannainst.com | portable
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