How are oxygen specimen collected?

Oxygen is a gas and cannot be collected as a specimen in the same way as solid or liquid samples. However, the concentration of oxygen in a given environment can be measured using various methods.

One common method is using an oxygen sensor or analyzer. These devices can be portable or fixed and are designed to measure the concentration of oxygen in the air. They typically use electrochemical or optical sensors to detect and quantify the amount of oxygen present.

Another method is through the collection of air samples in containers. This can be done using specialized equipment such as gas sampling bags or canisters. The collected air sample can then be analyzed in a laboratory using techniques like gas chromatography or mass spectrometry to determine the oxygen concentration.

It is important to note that oxygen is highly reactive and can easily react with other substances, so proper precautions should be taken during the collection and handling of oxygen samples to prevent contamination or alteration of the results.