: Anchored at 50% RH with a regular tolerance of ±10% . Advanced testing configurations shrink this variance to ±5% .
: Tests can be performed on "Dry" leather or "Wet" leather (submerged in water for 20 minutes before testing) to simulate different real-world conditions. 分析测试百科网 💡 Why It Matters astm d61821 pdf
Water immersion at 50°C for 48 hours, then cooled to 23°C before testing. Procedure D: High humidity conditioning (96% RH at 23°C). Notation and Technical Details : Anchored at 50% RH with a regular tolerance of ±10%
If your work involves textiles or leather rather than raw plastics, this is the relevant standard. 分析测试百科网 💡 Why It Matters Water immersion at
If you meant (Conditioning Plastics for Testing), here is a sample post you could use:
A: Yes. The search term "D61821" is simply a concatenation of the standard number (D618) and the year (21). The correct, official designation uses a hyphen: ASTM D618-21 .