I have used a Hanna PH pen that also showes temp from day one. never had a problem, it uses a 2 step calibration and is accurate to two decimal places. oh costs me 56 bucks a little over 2 years ago.
Steve
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 *everything said above is just my opinion, and may or may not reflect the views of this BBS, its Operators, and its Members. If cornered on any “opinion” I post I will totally deny having ever said this in a Court of Law…Unless I am the right one*
Some strive to be perfect.... I just strive.
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