soil ph value is a very important factor in the production of quality crops. most cropscannot survive in soil that is too acid or too alkaline. therefore the correct ph reading isessential to achieve optimum results. usage: to measure the ph and moisture value of different kinds of soil.range: ph= 3 - 8 ph moisture: 1 - 810%–80% resolution: ± 0.2 phaccuracy : ± 0.2 ph-suitable for agricultural field and classroom experiments.operating temp: 5-50°c (41-122 degrees fahrenheit).calibration: remove oxidation from metal rings by light polishing.

soil ph value is a very important factor in the production of quality crops. most cropscannot survive in soil that is too acid or too alkaline. therefore the correct ph reading isessential to achieve optimum results. usage: to measure the ph and moisture value of different kinds of soil.range: ph= 3 - 8 ph moisture: 1 - 810%–80% resolution: ± 0.2 phaccuracy : ± 0.2 ph-suitable for agricultural field and classroom experiments.operating temp: 5-50°c (41-122 degrees fahrenheit).calibration: remove oxidation from metal rings by light polishing.