Oxygen Analysis for Laboratories

Oxygen Analysis for Laboratories (O2) level of a product or process is critical to ensure high quality, safety and compliance. Residual oxygen analysis is a sophisticated technique used across multiple industries to ensure that products meet or exceed industry standards and are free of contaminating substances.

Various methods are employed for measuring the O2 concentration, including visual colorimetry, iodometric titration, electrochemical detection, and optical detection. The advantages and disadvantages of each method are analyzed in this article.

Compared to the iodometric titration method, which uses a complex solution and requires frequent manual calibrations, spectrophotometry is faster, more accurate, and easier to operate. However, its results are influenced by the iodine volatilization loss in water and by air contamination. Furthermore, the iodine-based titration method does not work well at low concentrations of dissolved oxygen.

Breathing New Life: The Importance of Oxygen Analysis in Laboratory Settings

For laboratories or facilities that use compressed gases such as nitrogen, argon, and liquid helium, monitoring the O2 level is crucial to protect employees from dangerous atmospheres. A leak in a gas cylinder can quickly displace the O2 concentration below safe levels, putting personnel at risk for asphyxiation. AMI offers a range of O2 analyzers to help labs monitor their environment and keep O2 levels at safe thresholds.