mike4c4
Well-Known Member
My meters are old and need replaced. My question is do all PH meters need calibrated? The set i have was from ebay. The yellow one with the blue TDS meter. I used then for 2yrs now bet their carped out on me. So what meters do you guys suggest. I dont want to spend alot of cash on these but i should be able to get a good set of both for under 60.00 or so.
