HI99121N Direct Soil pH Meter

(No reviews yet) Write a Review
(You save $170.00 )

The HI99121N allows you to quickly and accurately test pH levels directly in soil or after the preparation of a diluted sample.

The meter's specially designed electrode has a conic tip for insertion in moist or soft soils and it incorporates a temperature sensor right near the tip for measuring and quickly compensating for temperature. To ensure a high degree of accuracy or for stony ground where the electrode could be damaged, the HI99121N is supplied with a bottle of HI7051M soil preparation solution, which allows for diluted sample measurements.


  • Large dual-level LCD shows readings simultaneously
  • Tutorial messages for calibration and setup
  • Thin, rugged ergonomic case
  • Supplied with the HI1292D pH electrode, ground auger, HI7051M soil preparation solution, pH 4 and pH 7 buffer sachets, HI700663 and HI700664 electrode cleaning solutions, batteries, rugged carrying case and instructions


  • Ranges:
    • pH -2.00 to 16.00
    • Temperature: 23.0°F to 221.0°F (-5.0°C to 105.0°C)
  • Resolution: 0.01 pH / 0.1°
  • Accuracy: ±0.02 pH / ±1.0°F (up to 140°F)
  • Power: Three AA batteries
  • Dimensions: 5.9" x 3.1" x 1.4"
  • Weight: 210 g (7.4 oz)