Should have control over temperature and Mick pahai similar every time before entering the samples due to temperature effect on pami-Mick characteristics of film edge pieces that pull from the stretch.
The temperature should be controlled in a similar clips before putting the specimen. The clip temperature affects the appearance of stretch film around the edges of the stretch.
Should have a temperature control the video to the nearby before putting the target test. Because the temperature effect on the elongation of the film clip edge items that can be pulled from the ยืด