What is Reddit's opinion of
Apera Instruments SX620 pH Pen Tester Kit with 0.01 pH Accuracy, 3-Point Auto. Calibration, ATC?
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2 reviews of this product found across Reddit:
1 point
·
16th May 2019
Absolutely. I have an Apera Instruments AI223 SX620 pH... https://www.amazon.com/dp/B07BDVL66C?ref=ppx_pop_mob_ap_share
I've done 2 calibration on it with 7 and 4 solutions before every test. It's about 2 months old. Tried a friend's meter which is also an Apera but a different model and same result
1 point
·
28th Sep 2019
Apera Instruments AI223 SX620 pH... https://www.amazon.com/dp/B07BDVL66C?ref=ppx_pop_mob_ap_share
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