Hanna Instruments GroLine Direct Soil EC Tester
Product details
| Management number | 232561541 | Release Date | 2026/06/21 | List Price | $30.56 | Model Number | 232561541 | ||
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The GroLine Direct Soil EC Tester is a pocket tester specifically designed to directly measure soil conductivity (EC) and temperature. With a compact size, single button operation, and automatic calibration, Soil Test is an excellent choice for taking direct conductivity measurements in soil.
Lightweight & Portable
Made to fit comfortably in your hand, this compact EC tester for soil has an easy-to-view LCD. The stainless steel electrode allows for direct penetration into soil and soil slurries.
Made for Any User
The HI98331 makes testing easy for any user with single button operation and automatic calibration to 1413 µS/cm conductivity standard.
Integrated Temperature Probe
Using a fixed 2%/C temperature correction coefficient, this EC tester has a built-in temperature sensor so that samples are automatically compensated for temperature variations.
Measure the Bulk EC of Your Soil with a Soil Conductivity Test
Bulk electrical conductivity of soil measures the total conductivity. Total conductivity includes the EC of the soil, air, and moisture in your sample. All these things carry charged ions that would read as EC. This reading is very useful; you can calculate your pore water conductivity and saturated extract conductivity from the result. You would need to know your water content to perform that calculation (how much water there is in your soil).
How To Measure the Bulk EC with your Direct Soil EC Meter
- Pick your testing location.
- Rinse the testing probe with deionized water, and make sure it is dry.
- Check the soil and ensure that the soil is moist.
- Use a ruler or auger to make a hole in the soil. This keeps the testing depth consistent.
- Insert your soil conductivity tester directly into the soil, and take your measurement.
Follow This Simple Feed Chart Designed by our Research Team
| EC Range | 0 to 4000 μS/cm; 0.00 to 4.00 mS/cm (dS/m) |
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| EC Resolution | 1 μS/cm; 0.01 mS/cm (dS/m) |
| EC Accuracy | ±50 μS/cm (0 to 2000 μS/cm); ±300 μS/cm (2000 to 4000 μS/cm); ±0.05 mS/cm (0.00 to 2.00 mS/cm); ±0.30 mS/cm (2.00 to 4.00 mS/cm) |
| EC Calibration | automatic, one-point (1.41 mS/cm) |
| EC/TDS Temperature Compensation | Automatic, with coefficient (ȕ) fixed @ 2%/°C |
| Temperature Range | 0.0 to 50.0°C (32.0 to 122.0ºF) |
| Temperature Resolution | 0.1°C (0.1°F) |
| Temperature Accuracy | ±1°C (±1.5°F) |
| EC/TDS Probe | 114 mm (4.5”) stainless steel penetration (fixed) |
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| Automatic Shut-Off | 8 minutes, 60 minutes, or can be disabled |
| Battery Type / Life | CR2032 Li-ion (included) / approx. 100 hours of continuous use |
| Environment | 0 to 50°C (32 to 122°F); RH 95% max |
| Dimensions | 50 x 196 x 21 mm (2.0 x 7.7 x 0.9“) |
| Weight | 74 g (2.4 oz.) |
| Ordering Information | 74 g (2.4 oz.) |
| Warranty | 1 Year |
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