Hi,

After calibration, when i put the probe in the tank, the redox probe's measurements up and down by about 30 and then starts dropping to around 80. It does not make any sense. I washed the probe and put into calibration solution after a while the measurements settle at the correct value of 220.

Is there a possibility that other probes are interfering with each other or could there be any other issues?

Regards Darius