Question about water parameter test

Not really.
They are very inaccurate.
The better ones that are sold for more than $175.00 with probe, storage, and calibrating solution, are more accurate.

steakman said:

Not really.
They are very inaccurate.
The better ones that are sold for more than $175.00 with probe, storage, and calibrating solution, are more accurate.

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Agreed! I had one of the inexpensive ones, and you'd have to let it settle for up to 15 minutes to get a reading. It just wasn't worth it at all. I ended up adding another pH probe to my Apex controller and monitoring that way.

those pens are cheap for a reason. I bought one before and it's very inaccurate even after re-calibrating.

Pens suck.

Thanks all, great thoughts. I will continue to use the liquid test.