Review on 🔬 High Accuracy, 3-in-1 TDS/PH/Temperature Meter with ATC for Lab Use - LCD Display, Data Lock Function - pH Meter with 0.01 Resolution by Alex Montgomery

Much to my surprise, this little dude actually worked! As you can see from the photos, the accuracy is +/-0.3, but that's to be expected from anything outside of the lab. I have ordered at least five different gauges from two other companies from Revain and they have all been rubbish. They were so inaccurate that they were completely useless. This one is perfect for my quarantine chemistry projects! TIP: The instructions say it comes calibrated and ready to use straight away, but I haven't found that to be the case. Mix the calibration solutions, leave for 30 minutes, calibrate the measuring device and you're done!