PH/TDS tester cleaning?

Can I use Isopropyl alcohol to clean my PH and TDS testers or do I have to use distilled water?

Why would you need to clean them? After you dip the meter into a nute solution it should be swished around in regular water directly afterwords. That way there will be no build up

tom__420 said:

Why would you need to clean them? After you dip the meter into a nute solution it should be swished around in regular water directly afterwords. That way there will be no build up

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My hand held meter gets rinsed with distilled h2o after use and I have a meter than resides in my reservoir all the time. After harvest I will clean the probe with the cleaning solution from the manufacturer. I also calibrate the meter monthly.