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.
Hypoxemia is diagnosed by measuring the amount of oxygen in your blood. This is done by pulse oximetry or by an arterial blood gas (ABG) test. Pulse oximetry is done using a small instrument placed on your finger. The pulse oximeter gives a digital reading of the amount of oxygen in your blood.