X-ray opacity test method of gauze

Place the screenless X-ray film on a lead rubber sheet with a thickness of no less than 2mm or an equivalent thickness, and put the sample or X-ray in the center of the film

For representative samples of the line detectable components, the remaining parts of the film that were not covered by the test piece were all covered with 2mm lead or lead rubber of equivalent thickness

Cover it to prevent X-ray scattering from affecting the film. Finally, place a 10mm thick 99% pure aluminum plate on the sample.

The sample and the aluminum plate were simultaneously irradiated with an X-ray machine at a peak voltage of 70kV, so that the logarithmic optical density passing through the 10mm thick aluminum plate was approximately

1.0, the imaging of the sample should be significantly shallower than the background.