If you have forgotten your password, please enter your email address below and click "Reset Password". A new password will be assigned to your account and emailed to you. We determine film thickness using two methods; spot thickness and gravimetric thickness. Both are performed in accordance to relevant international standards. The thickness of a sample of plastics film or sheeting can be measured by mechanical scanning using a digital deadweight micrometer.

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Standard Test Method for. Package Yield of Plastic Film 1. A number in parentheses indicates the year of last reapproval. The values given in brackets are for information only. It is the responsibility of the user of this standard to establish appro- priate safety and health practices and determine the applica-.

Referenced Documents. Current edition approved May 1, Published June Originally approved in Last previous edition approved in as D - The width is to be accurately measured for subsequent use in calculating the specimen area. United States. Using the steel straightedge, make cuts as far apart as necessary to produce a specimen weighing at least 1 g.

Sharp Utility Knife or Razor Blade, or equivalent. Analytical Balance having a resolution of at least 0. Steel Tape Measure having a resolution of at least 0. Usually, a length of 3 m 10 ft is sufficient. If the sample. Press down on the top of the template in the area where the cut. Retrieve the cutout specimen. Record the pre- measured width of the template as the length, L a , in metres [inches] of the test specimen.

Measure the length of the test specimen using a steel tape measure to the nearest 0. Record this as the length, L a , in metres [inches] of the test specimen. These specimens must be at least.

Discard the scrap between where the specimens are taken. If yield of a lot or. For reporting on the measured yield of a lot or shipment, average the n values of Y a obtained for the n samples from the lot. Precision and Bias 3. In this study, considering a test result to be the average value of actual yield derived from testing three specimens of a material in a short time span, all six laboratories obtained one test result for each material by use of templates, and four of the six obtained one test result for each material by use of straightedges.

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Standard Test Method for Package Yield of Plastic Film

This is needed since, in material specifications, limits for yield are normally stated in terms of the percent deviation of actual yield from nominal yield. The values given in brackets are for information only. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Multi-user access to over 3, medical device standards, regulations, expert commentaries and other documents.


ASTM D4321 (R)



ASTM D4321 - 15


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