HAUSPROFI pH Meter and TDS Meter with LCD Display, High Accuracy Electrode Digital Water Quality Tester, TDS EC pH Temperature 4 in 1 Set for Drinking Water, Food, Pool, Hydroponics, Aquarium

I found both meters easy to use with clear screens to determine the exact measurements. I will use them again on numerous occasions but do wish that they had came with a pH scale alongside the instructions. I thought I wouldve had to have paid a fortune to purchase these meters but thankfully I had the option of buying them here. Look forward to using them again. Great purchase made!