Review on 📈 High Accuracy Digital pH Meter with ATC Tester - 3 in 1 Pen Type for Water, Wine, Spas, Aquariums - 0.01 pH Resolution, TDS & Temp Measurement by Grace Brown

I found that you get what you pay for with these products! Almost every time I use it, I check its accuracy with the "pH test indicator" I've pictured. It was 99% accurate with drops so I gave it 5 stars for accuracy. I prefer drips because the stylus can degrade over time or eventually need to be recalibrated without warning! But pens are much faster to use and save a lot of time! At the time of writing this review, I've only had to calibrate it once, but I use it almost every day! I would definitely recommend this product to anyone and it is definitely worth the extra cost. Money compared to cheap $10 pens! I would recommend keeping 3 different pH solutions in sealed jars so you don't have to buy packs every time they need to be calibrated.