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.
Low Blood Oxygen. The oxygen levels in blood can be measured by two means - first checking the arterial blood gas by resorting to a blood test, and second, by using a pulse oximeter (a device which is clipped on to the finger and to take oxygen readings in the blood).