Product review (5 stars): No regrets
Excellent product; have been using this PH meter daily to track and adjust my well water for horticultural use. I keep distilled water handy to maintain the PH meter and clean between using. So far the readings are reliable; I use a half teaspoon of citric acid to bring 4 gal of well water (PH of 7.2) to a comfortable 6.4 for my plants. No issues with the meter and happy with the entire purchase at Amazon. Good job sourcing quality meters at obtainable prices.