For the municipality of the same name in Gloucester County, see Monroe Township, Gloucester County, New Jersey.
How to measure dissolved oxygen. Dissolved oxygen is measured using a dissolved oxygen meter. The best method is to take the measurement in the field at the same time each day because DO concentrations can vary throughout a 24 hour period.issolved oxygen (DO) is a measure of the quantity of free oxygen molecules in water.
Data from the World Ocean Atlas 2009. Dissolved oxygen (DO) is measured in standard solution units such as millilitres O 2 per liter (ml/L), millimoles O 2 per liter (mmol/L), milligrams O 2 per liter (mg/L) and moles O 2 per cubic meter (mol/m 3).For example, in freshwater under atmospheric pressure at 20Â°C, O 2 saturation is 9.1 mg/L.ata from the World Ocean Atlas 2009. Dissolved oxygen (DO) is measured in standard solution units such as millilitres O 2 per liter (ml/L), millimoles O 2 per liter (mmol/L), milligrams O 2 per liter (mg/L) and moles O 2 per cubic meter (mol/m 3).