5 year review: Subject: WK 28684 5 year review ASTM D543-06 At the recommendation of the subcommittee, this is a re-ballot of the 5 year review of D543 Standard Practices for Evaluating the Resistance of Plastics to Chemical Reagents, addressing an accepted, negative vote that found unacceptable use of non-permissive language in notes and including a suggestion to reference a national metrology institute. Please review this standard for elimination of permissive language and maintaining permissive language in non-mandatory notes. Changes made here and in previous ballots D20 (12-021) and D20 (05-13) Closing Feb 25,12 and July 24, 2013 are indicated.
Keywordschemical reagent; dimensional changes; exposure; mechanical property changes; plastics; stress;
Negative Votes Need Resolution