Review on 🌱 Bluelab METCOM Combo Meter: pH, Temperature, Conductivity (Nutrient) Monitoring for Hydroponics and Indoor Plant Grow - Easy Calibration and Digital TDS Tester. Pack of 1. by David Kits

Very accurate. Recommended if accuracy is everything to you! Calibrate at least twice a month with daily use and buy a sensor storage solution! No additional storage solution is included, but you get something, plus the extra 4.01 and 7.01 buffers, and you're good to go for a while! All electrodes are very fragile, including this one, so keep them in your hands. carefully near a sink or hard surface. It is highly recommended to use a pH drop test kit to check the pH when you receive the device and several times a year to ensure your electrode is in good condition. The electrode is very easy to replace. Another tip: if you run out of storage solution, buffer solution 4.01 will suffice. Just never keep it in DI/RO water.