This is what ESD TR20.20 - Handbook has to say about Static Protective Seating. Although not required in S20.20 as a primary means of grounding personnel in the workplace, the use of chairs that meet resistive requirements from the seat contact surface to the castors or leg ends, may be an effective means of grounding personnel . . . if the chair is used to connect personnel to ground . . . maximum resistance to ground from the person through the chair and flooring system should be less than 35 megohms. Criteria for evaluating the electrical resistance of static protective seating can be found in ESD-STM 12.1. -----Original Message----- From: TechNet [mailto:[log in to unmask]]On Behalf Of Joseph Sokalski Sent: Friday, September 16, 2005 2:36 PM To: [log in to unmask] Subject: [TN] ESD Drag Chain Length Dear Technetters: Has anyone seen a documented standard for the recommended drag chain length attached to rolling carts? During a recent customer audit, I was cited for insufficient chain contact with our ESD flooring. I looked in ANSI/ESD S20.20-1999 and did not see any reference. Any assistance would be appreciated. Joseph Sokalski Test Technology, Inc --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------