Review on 📈 Dr.meter PH838 Digital pH Meter: Upgraded 0.01 Resolution, High Accuracy Tester with Backlit LCD Display, ATC, and Data Hold Function - 0-14pH Measurement Range by Brian Wright

I have found the Dr 838 dispenser useful for mixing salt based nutrients for my indoor garden. Tested on a flow meter twice the price, it has held up well to calibration over the past 30 days. The kit comes with your first two calibrations, you will need distilled water. The device runs on 2 AAA batteries (included) and is easy to calibrate (I think I saw the video 🤔) for maximum lifespan, use the 4.0 solution on the sponge in the cap and hold the sensor bulb clean. This device does not measure the pH of distilled water, it must be at least 150ppm for an accurate reading. Calibration once a month Order packages when you order this meter.