Hanna Direct Soil Measurement pH Portable Meter HI99121

The HI99121 Direct Soil Measurement pH Portable Meter is a handheld pH meter designed for direct pH testing of soil or for use with a soil slurry. Model HI99121 includes a specialized, replaceable soil pH electrode with built-in temperature sensor and is supplied with a ground auger, soil preparation and electrode cleaning solutions, buffer sachets, and carrying case for field use. The instrument provides automated calibration and temperature compensation to produce accurate pH and temperature readings for agricultural and environmental soil analysis.

Key Features:

• Model: HI99121
• pH range: -2.00 to 16.00 pH; resolution: 0.01 pH; accuracy: ±0.02 pH (at 25°C)
• Temperature range: -5.0 to 105.0 °C (23.0 to 221.0 °F); resolution: 0.1 °C; automatic temperature compensation
• Included probe: HI12923 glass-body, pre-amplified pH/temperature electrode with conical tip and open junction (replaceable)
• Ingress protection: IP67 (dust and water resistant)
• Power: 3 × 1.5V AAA batteries; approx. 1400 hours of continuous use (battery percent displayed)

Advantages:

• Specialized conical, open-junction electrode enables direct insertion into moist or soft soils and reduced clogging for stable measurements
• Automatic one- or two-point calibration, on-screen guidance and automatic temperature compensation streamline field measurements
• IP67-rated, ergonomic portable design with long battery life and supplied accessories (auger, cleaning and preparation solutions, buffers) for ready-to-use soil testing in the field