This Recommended Practice (RP), IEST-RP-CC004.4, describes methods for evaluating or testing wipers used in cleanrooms and other controlled environments for characteristics related to both cleanliness and function

Significant updates were made to Version 004.4, including a new Appendix A, which provides additional guidance based on common usage and collective experience. A table is included to assist users in selecting wipers that may be suitable for certain applications or environments.

November 2019 (Supersedes previous versions, including IEST-RP-CC004.3, IEST-RP-CC004.2, IES-RP-CC-004-87-T)

Evaluating Wiping Materials Used in Cleanrooms and Other Controlled Environments was prepared by Working Group 004 of the IEST Contamination Control Division (WG-CC004).