S seldin Advanced Reefer Manhattan Reefs Location New York Rating - 100% 94 0 0 Jan 20, 2021 #41 I actually compared using a calibration solution and then rodi water. Got same result for calibration. Even if it is off a little bit, the concern is consistency.
I actually compared using a calibration solution and then rodi water. Got same result for calibration. Even if it is off a little bit, the concern is consistency.
