Objective: Ensure any material other than aluminum (e.g. seals, plastic parts, desiccant, etc.) is notnegatively affected by R-1234yf or its oils. Each supplier should have conducted screeningand detailed analysis prior to starting this test since this test is a verification test and not adevelopment test. Note: materials should be validated for each combination of refrigerant (R-134a, R-1234yf) and oil (ND8, ND11, ND12, FD46, etc.) that is planned for the application.Procedurea) Select testing fixtures based on the application of the component being tested.b) Complete testing with a mixture of 90% R-1234yf and 10% oil.c) Test condition is 500 hrs at 125 °Cd) At the completion of the testing, the following properties must be analyzed:• Tensile• Hardness• Mass change• Volume change• Dimensional change