I just received a new kh director probe today, calibrated with no issue. Inserted into kh director and started receiving readings in the thousands around 9-10000 ph. Removed probe and placed back into 4ph solution to see if still calibrated but readings remained in thousands. Also tried to recalibrate with new solutions and got adc readings in the negative thousands and around 40,000. Anyone experienced this was I sent a faulty probe?
