What is the test gas used by the installer?

The test gas used by the installer is often Nitrogen NF (Nitrogen for Medical Applications). Nitrogen is a chemically inert gas that is non-toxic and does not react with most substances, making it an ideal choice for testing and purging medical gas systems. It is commonly employed in verifying the integrity of gas lines and ensuring that there are no leaks.

Using Nitrogen NF has several benefits. It allows the installer to create a controlled environment in the piping system, where any potential leaks can be identified. It prepares the system for the actual medical gas, maintaining the safety and quality standards required in medical settings.

While argon is another inert gas, it is less commonly used for testing medical gas systems. Compressed air, although it can be used in some applications, contains moisture and impurities that can harm the integrity of medical gas systems. The source gas refers to the specific gas that is intended to be delivered through the system, which would not be appropriate for testing purposes until the system has been verified as leak-free and safe. Therefore, Nitrogen NF is the preferred choice for medical gas installation testing.