This is a very high quality Soil PH and Misture Combo Probe...no batteries ever! Works off the magnetic field of the earth... very accurate. This is what they use on Vineyards, Tree Farms, and other soil or soiless mixes.

This is the "Short Style" but a longer 16" Overall Probe is also available for use in deep containers like 5 gallon pails, just click SOIL GARDENING.

SPECIFICATIONS

Great for Quick pH & Moisture Reference of Commercial or Residential: Vineyards, Orchards, Feild Produce, Planters, Lawn Maintenance and gardens. 

PH RANGE: 3-8

Moisture Range: 1-8

Reolution 0.2 pH

Accuracy: +/- 0.2pH (VERY ACCURATE!)

Operating Temp: 41F-122F

Dimensions: 8" L x 2 1/2"