ORP Meters

ORP Meters

Oxidation Reduction Potential (ORP) Tester

An ORP reading / Redox value can be used to:

  • Indicate suitability of soil, etc. for biological life
  • Determine when additional cultivation is unnecessary
  • Indicate stability and stage of completion of compost

A simple formula using the readings from an ORP and a pH meter, provides a Redox (rH) value from 0 to 42. Optimum soil rH value is 25 - 28. The pocket tester with a single range (+/- 999 mv) also may be used to measure H2O2 / H2O mixtures.

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