lilweeezy420
Well-Known Member
hey all i just bought this cheap digital ph meter online and it says it comes pre-calibrated. How would i know if this ph meter is on point? any suggestions?
ph meter
- Thread starter lilweeezy420
- Start date
think2toke
Well-Known Member
Use water that you know is a certain PH if its one you can use in water. You can buy water like that at a petstore.