Review on 🌡️ Digital Aid Professional TDS, EC & Temperature Meter: 3-in-1 Professional Quality TDS Meter (0-9990ppm) by Jesse Azuse

When I first used this gauge, it was accurate at a very low level. I had my pool redone and when I took a water sample to the pool shop they said I had 500ppm salt. I didn't believe it, but this meter said the same thing. So I gave it a good rating. When I added salt to get readings up to 3200ppm, this meter read 5000-6000ppm. I was very careful, followed the instructions for using the glucometer and kept it in the sample for a long time, but the readings were still very high. Unfortunately I have to send it back for a refund.