- Messages
- 323
- Location
- Finland
Hi,
What is the correct way of using conductivity meter?
I always have to calibrate it before measurements. Because it seems to lose its calibration by, say 200µS.
The manual says you only have to calibrate it after 10 measurements or 2 weeks.
Have I "polluted" my calibration fluid when the first 2 times I calibrated, I only rinsed the meter with tap water.
I don´t pour the calibration fluid out of the bottle that is in the package. I stick the meter into the fluid in the original bottle.
I have water that is used for batteries. It says that it´s maximum conductivity is 5µS. I use that to rinse the meter nowadays.
Should conductivity rise over time? Every time i take measurements, it seems to stay in same values. About 140µS.
Should fertilizers rise it much? I use the "duckweed index" and only dose when the plants start to lose their green.
What is the correct way of using conductivity meter?
I always have to calibrate it before measurements. Because it seems to lose its calibration by, say 200µS.
The manual says you only have to calibrate it after 10 measurements or 2 weeks.
Have I "polluted" my calibration fluid when the first 2 times I calibrated, I only rinsed the meter with tap water.
I don´t pour the calibration fluid out of the bottle that is in the package. I stick the meter into the fluid in the original bottle.
I have water that is used for batteries. It says that it´s maximum conductivity is 5µS. I use that to rinse the meter nowadays.
Should conductivity rise over time? Every time i take measurements, it seems to stay in same values. About 140µS.
Should fertilizers rise it much? I use the "duckweed index" and only dose when the plants start to lose their green.