The reading from the MW600 DO Meter is mg/L. Is there a straight forward conversion for PPM?
mg/l and ppm are the same.
Saturation is percent saturation. Most meters have an option where you can go back and forth from mg/l to % saturation. Saturation actually makes more sense.
When you first turn on your D.O. meter do you wait for the reading to stabilize? My YSI 550A has an option to calibrate by putting in saturation mode, waiting for the reading to stablize, and then calibrating it according to directions. You should calibrate before every reading. Another way to calibarate is to use a chemical test to measure mg/l and calibrate your meter to that reading.
Also moving the probe back and forth through the water is important to get an accurate reading.
