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Is there a preferred brand for tds and/or ph electronic testers


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HM digital TDS-3 works well for me. Fairly inexpensive too, $20 bucks or so. It also tells temp. I double check the accuracy with calibration liquid and it stays true.

As for PH, I run a controller and have replaced the Milwaukee probe it came with to a American Marine one now just because of price. Couldn't really say which brand is better they don't last forever and require calibration fairly often. Ph portable stick pens I have no experience with. But I do know that since ph probes must stay wet, you risk drying them out easily. The reviews on ph pens tend to be shaky because of misuse.
 
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