The face mask tensile test machine is used to evaluate the tensile strength and elongation properties of face masks. Here are the steps to use the machine for testing the tensile strength of a face mask:

1. Turn on the face mask tensile test machine and adjust the settings according to the test requirements.

2. Cut the face mask into a size and shape that will fit into the grips of the machine.

3. Load the face mask into the grips of the machine, ensuring the mask is centered and aligned perfectly. The mask should be securely fixed in place such that it will not slip or move during the test.

4. Adjust the angle of the grips according to the testing standard used and the type of test being conducted.

5. Begin the test by initiating the machine's tensile force system, which applies a force to the mask until it breaks.

6. The machine will provide real-time measurements and records the maximum tensile force at which the mask breaks and the elongation of the mask under that force.

7. The test is completed once the mask has broken or if a specific elongation percentage is reached, depending on the standard being followed.

8. The test data can be analyzed to determine the tensile strength and elongation of the face mask.

9. The results of the test can be compared with standards set by relevant regulatory bodies such as ASTM, EN, and ISO.

To obtain reliable and accurate results, it's necessary to ensure that the test is performed following set standard procedures, and the face mask is cut and loaded appropriately. Skilled operators should be trained to carry out the tests and interpret the results obtained from the machine.