HI99121 pH Meter Direct Soil Measurement

Product information "HI99121 pH Meter Direct Soil Measurement"

With the HI 99121 and HI 1292D direct soil pre-amplified pH and temperature probe, users can test both the pH of soil directly or after preparation of a diluted sample.

The HI 1292D features a conical, rugged tip that can be directly inserted in moist or soft soil. For harder soils, the kit includes a plastic auger to perforate the ground.



Dedicated to soil pH measurement
Specialized soil pH electrode
Multi-level LCD display
User friendly operation using only 2 buttons
On-screen tutorial messages
Automatic Temperature Compensation
Automatic one or two point calibration
BEPS (Battery Error Prevention System) alerts the user in the event that low battery power could adversely affect readings
Battery % displayed on startup
Compact, heavy-duty, and waterproof



Order Information: HI 99121 is supplied with HI 1292D pH electrode, HI 721319 soil auger, HI 7051M soil preparation solution, HI 70004 pH 4.01 buffer solution sachet, HI 70007 pH 7.01 buffer solution sachet, HI 700663 cleaning solution sachet for inorganic soil deposits, HI 700664 cleaning solution sachet for organic soil deposits, 100 mL plastic beaker, batteries, instructions and a hard carrying case.


Specification :
Range pH -2.00 to 16.00 pH
Temperature -5.0 to 105.0°C / 23.0 to 221.0°F
Resolution pH 0.01 pH
Temperature 0.1°C / 0.1°F
Accuracy @ 20°C pH ±0.02 pH
Temperature ±0.5°C (up to 60°C), ±1°C (outside); ±1.0°F (up to 140°F), ±2°F (outside)
pH Calibration automatic one or two point calibration with two sets of memorized buffers (Standard 4.01, 7.01, 10.01 or NIST 4.01, 6.86, 9.18)
Temperature Compensation Automatic, -5 to 105°C (23 to 221°F)
pH Electrode HI 1292D glass body, pre-amplified pH electrode for soil measurement with internal temperature sensor, DIN connector and 1 m (3.3’) cable (included)
Battery Type / Life 1.5V AAA (3) / approximately 1200 hours of continuous use. auto-off after 8 minutes of non-use
Environment 0 to 50°C (32 to 122°F); RH max 100%
Dimensions 152 x 58 x 30 mm (6.0 x 2.3 x 1.2”)
Weight 205g (7.2 oz.)