Review on 🌊 KETOTEK 3-in-1 Digital TDS-EC-Temp Water Tester with ±2% Accuracy for Aquariums, Hydroponics, and RO System - pH Meter Included with 0-14.00 Range and 0.01 Accuracy - Ideal for Testing TDS and pH of Water by Aaron Vang

The TDS meter is great. PH meter. I do not know. I had to calibrate right out of the box. Readings seemed off. Compared to the ph indicator, the meter readings were significantly higher than in the indicator test. Compared several times to confirm. I calibrated with the supplied solution mix. It seems to be right after. The only thing is that my confidence in future readings is not very high. I need to order a calibrated grout mix to have on hand. I hope that when I buy this meter I can leave the ph indicator solution in the cupboard. Will not happen. That's ok for a quick check. But when I mix a large amount of nutrient solution, I check with a meter and an indicator. Seems superfluous. Perhaps I should have spent more on a gauge or a wand with an indicator.