Do You Need a pH Meter to Test Pool pH?

[PoolDoc]

Unlike 'wet' pH tests, pH meters are not necessarily 'correct' out of the box, but must be calibrated. This is NOT optional. Also, these are cheap-o Chinese kits -- most probably work well, but Chinese products tend to have poor quality control. You MUST validate your meter, by comparing results with a drop test, used by someone who is NOT color blind! Also, pH tips are THIN glass, and will not survive a fall.

Inexpensive units from Amazon

Buffer pack
pH Meter