Hi Doug, Please send me also a copy of your article. I will highly appreciate it. Sincerely, Daid Santoso Jalan Pulo Mas VI E no.8 Jakarta 13210 Indonesia D.W. Cooper, "Using Swabs for Cleaning Validation: A Review," pp. 74-89, Cleaning Validation, Institute of Validation Technology, Royal Palm Beach, FL, 1998. ------------------ The PMFList (http://microbiol.org/pmf.htm) is operated from The Microbiology Network (http://microbiol.org) and supported by our sponsors (http://microbiol.org/sponsor.htm) as a service to the scientific community.