A new redox (ORP) sensor has been added to the eCow bolus, measuring redox in the reticulum. This gives an indication of the anaerobicity of the rumen. Redox also known as Oxygen Reducing Potential measures the ability of a solution to reduce compounds by oxidation. Several customers have asked for a redox sensor to be included in the sensor package. With some clever design we have managed to build a gold disk electrode into the sampling port of our standard bolus system. The sensor measures redox in the range from 400 to -400 mV with an accuracy of 25mV compared to a Ag/AgCl reference.

We now have sensors out with two aprtners and the results are encouraging. Redox falls as pH rises and vice versa.