Review on 🎯 High Accuracy PH and TDS PPM Meter Pen Combo for Household, Pool, Aquarium, and Laboratory – Digital Tester with ± 2% Readout Accuracy and Temperature Meter by Jessica Griffith

Basically I got this pH meter combo kit but I will also be using a TDS meter to measure liquid dilutions of plant food - so that's it practically. The pH meter was pretty basic. To install. This takes about 20 minutes. You need: *) Distilled water *) Measuring cup (for liquids) with a milliliter mark *) Thermometer. The digital cooking thermometer works well.*) Microwave can be used. Measure out 250ml of distilled water. Use a thermometer to check the temperature - the closer to 25°C the better the accuracy - use the microwave in 1-2 second increments to raise the temperature if it's lower. Mix the pH buffer powder and calibrate the meter according to the instructions. Repeat with other buffer powders. Since then the pH meter has been providing reliably reproducible results, although I am not qualified or able to say how accurate they are. To me, when using it to test the pH of water used with mineral wool growth blocks, it seems to fit the bill quite nicely. I tested the TDS meter with various water sources and found what you would expect: distilled water was under 10, RO was 30, and tap water was over 400. Each meter also comes with its own storage box.