There are various national regulations and international guidelines to ensure that cylinders and valves are checked for gas tightness. The choice of the leak detection fluid (LDF) needs to be carefully considered on account of potential hazards from LDFs. These potential hazards include the risk of stress corrosion cracking (SCC) and incompatibility with materials and ladings such as oxygen. This publication provides recommendations related to the selection and use of leak detection fluids.
