167
people found this helpful, as of 2023
ranked #201,754 most helpful
out of 571,544,897 reviews
★★☆☆☆
Fail...
Was good for about 6 weeks. It will no longer maintain calibration. I've sent several emails to Apera and left 2 voice messages with no response.. A company can offer any warranty they want especially when they won't back it up.. Sadly this ph pen & Apera are a FAIL
the product in question
APERA INSTRUMENTS AI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH Accuracy
4.5★ · 7,966 ratings, as of 2023