PH probe calibration
Posted: Sun Oct 22, 2017 6:07 am
Hello everyone,
Have not had any issues lately until now.
PH probe started reading low. Recalibrated with 7.01 and 10.01 solution. 7.01 = 395 and 10.01 = 686. Does this sound correct?
The probe reads 8.43 at night and 8.57 during the day. Checked against Salifert test which reads 7.7 at night and 8.00 during the day.
Did all the usual tests with water out of tank in cup and electrical stuff turned off etc. Numbers stay the same for the probe.
Have not had any issues lately until now.
PH probe started reading low. Recalibrated with 7.01 and 10.01 solution. 7.01 = 395 and 10.01 = 686. Does this sound correct?
The probe reads 8.43 at night and 8.57 during the day. Checked against Salifert test which reads 7.7 at night and 8.00 during the day.
Did all the usual tests with water out of tank in cup and electrical stuff turned off etc. Numbers stay the same for the probe.