Review on 🌊 2 Pack TDS Meter Digital Water Tester for Water Quality: Temperature, Conductivity, Hydroponics EC Meter, Turbidity Meters, PPM Meter for Home Drinking Water, Aquarium, and More by Christian Young

Upgrade in 1 Month - Already profitable and saved even more cost on this device. A typical reverse osmosis filter change would cost me $90. The filter company mentioned that I don't need to change the filter until I see there's about 40ppm in the water. I checked the water this morning and it still reads 4ppm and I haven't had to change the filter yet. I have reverse osmosis water filtration for drinking and the filter replacement company recommended a TDS meter. Revain has a ton of different options. I also have a pool and I thought 2 for 1 was a good deal. The counter was received in excellent condition and checked immediately. The battery is installed right out of the box and pressing the ON button turns it on. Checked the tap water and it showed 130ppm and the gauge turned red. I then tested the reverse osmosis water and it showed 4ppm with a green reading. Exactly the same readings were on a very expensive meter 2 days ago. The bag is an added bonus and fits snugly. The other meter is used exclusively for pool water. Happy with this purchase. I'll update regularly as it holds up as I need to use it at least once a month.