ASTM F2828-2020 用湿式萃取清洗系统清洗时根据外观变化评估地毯清洁效果的标准试验方法.pdf

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards Guides and Remendations issued by the World Trade Organization Technical Barriers to Trade (TBT)Committee. Designation:F2828-20 An American National Standard NTERNATIONAL Standard Test Method for Assessing Carpet Cleaning Effectiveness in Terms of Visual Appearance Change When Cleaned with a Wet Extraction Cleaning System This standard is issued under the fixed designation F2828:the number immediately following the designation indicates the year of original adoption or in the case of revision the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon (e)indicates an editorial change since the last revision or reapproval. 1.Scope mendations issued by the World Trade Organization Technical 1.1 This test method provides only a laboratory test for Barriers to Trade (TBT)Committee. visually determining the relative carpet cleaning effectiveness of a wet extraction cleaning system when tested under standard 2.Referenced Documents c...