Hanna Instruments Direct Soil Measurement pH Portable Meter
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Direct Soil pH Meter: Precision for Soil Analysis
Designed for soil pH testing, the HI99121 features a rugged conical tip, open junction design, and glass body for direct soil measurement. Equipped with a replaceable HI12923 pH electrode, it ensures precise analysis of soil and soil slurries.
- Features & Benefits
- Product Specifications
- What is included?
- Warranty Policy
Hanna Instruments Direct Soil Measurement pH Portable Meter
The HI99121 serves as an ideal portable pH meter for efficient soil testing. Utilizing the HI12923 direct soil pre-amplified pH and temperature probe, it enables users to measure soil pH directly or after creating a soil slurry with deionized water. The rugged, conical tip of the HI12923 is designed for direct insertion into moist or soft soil, and for harder soils, the kit includes a plastic auger for perforation. Offering automatic temperature compensation, automatic two-point calibration, and waterproof capabilities, the HI99121 ensures accurate and hassle-free soil pH measurements.
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Automatic Temperature Compensation -
One or two-point automatic calibration
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BEPS - Alerts the user of low battery power that could adversely affect readings
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Compact, heavy-duty, and waterproof
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Battery % displayed on start-up
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HELP feature, displays messages on LCD
Highlighted Features
Probe Condition: An on-screen indicator provides visual confirmation that your probe is working at its best.
Low Battery Indicator: Included batteries offer 1400 hours. A blinking warning below 10% battery; meter auto-shuts to prevent errors.
Automatic Shut-off: Choose 8 or 60 mins auto-off, or disable for continuous use. Saves battery and prevents accidental drain.
Built to be Durable: Designed for durability, the IP67 body protects against dust and water, ensuring top performance in any environment.
Portable Design: Handheld design for on-the-go testing. Multilevel LCD for easy pH and temperature readings. Dual-button operation streamlines testing.
Quick Connect Probe: Quick Connect DIN for easy probe attachment. Rubber coating ensures a water-tight seal without twisting.
FAQ Section
Specifications 
| Hanna Instruments Direct Soil Measurement pH Portable Meter | |
|---|---|
| pH Range | -2.00 to 16.00 pH; -2.0 to 16.0 pH |
| pH Resolution | 0.01 pH; 0.1 pH |
| pH Accuracy | ±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) |
| pH Temperature Compensation | automatic ‐5.0 to 105.0 °C/23.0 to 221.0 °F |
| pH CAL Check (electrode diagnostics) | probe condition indicator |
| mV Range | ±825 mV (pH‐mV) |
| mV Resolution | 1 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 | ±0.5°C (up to 60°C); ±1.0°C (outside) / ±1°F (up to 140°F); ±2.0°F (outside) |
| pH Electrode | HI12923 glass body, pre-amplified pH electrode for soil measurement with internal temperature sensor, quick connect DIN connector and 1 m (3.3’) cable (included) |
| Automatic Shut-Off | user selectable |
| Battery Type/Life | 1.5V (3) AAA / approximately 1400 hours of continuous use; auto-off after 8 minutes of non-use |
| IP Protection | IP67 |
| Environment | 0 to 50°C (32 to 122°F); RH max 100% |
| Dimensions | 154 x 63 x 30 mm (6.1 x 2.5 x 1.2”) |
| Weight | 196 g (6.91 oz.) |
What is included?
It includes:
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HI99121 Direct Soil pH Portable Meter -
HI12923 Direct Soil Pre-Amplified pH and Temperature Probe
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Plastic Auger (for harder soils)
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Batteries (for 1400 hours of continuous use)
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User Manual
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Rugged Carrying Case
Warranty Policy
Please check out the manufcaturers website for Warranty related issues.
