I have recently been getting what I consider erroneous readings from my cheapo $15 TDS
meter and am considering buying a new meter, it's the Hanna Instruments pH/EC/TDS
Combo (Mfg# HI 98129).
Does anyone have any experience with this meter? I am only intending it for use with testing TDS
but it also does pH and has a removable/replaceable electrode for that, it's waterproof, etc. $130 right now on Dr Fosters & Smith.
I really don't want to have to buy another one. The one I have has this little screw in the back to calibrate it, and I tried - forgot about it. This one is digital calibration.