As they read through the document, they noticed that the standard specified a particular conditioning procedure for plastics, including a requirement for a controlled environment with a temperature of 23°C ± 2°C and relative humidity of 50% ± 10%. The team realized that the production area where the sheets were made had recently experienced a malfunction in the climate control system, which might have affected the sheets' properties.
However, just as they thought they had solved the problem, they received another call from the production manager. This time, it was about a different product, a batch of PVC sheets that were reported to have excessive shrinkage. astm d618-21 pdf
The team quickly came up with a plan to recondition the sheets according to the ASTM D618-21 standard and then retest them. This time, the results showed that the sheets met the required specifications, and the issue was resolved. As they read through the document, they noticed