If memory serves, there are two classes of protective wrap which are SUPPOSED to be used. One, the "primary" packaging layer, is supposed to be moderately conductive so that it forms a protective layer around the entire perpiphery of the card, thereby protecting it (the card) from spot chrges transferred to it by handling. The other, the "secondary" packaging layer, is intended to provide mechanical protection for the card and its primary packaging. Common examples of the primary packaging include the black conductive bags we commonly see used for this purpose. The pink-poly bags and bubble wrap, etc, are anti-static but not conductive, and are consequently qualified as "secondary" packaging, as they create no static charge on their own, but don't do anything to dissipate it. Aluminum foil, properly applied will qualify as primary packaging, though it's not ideal due to its fragility. The fact that it will discharge batteries and other things likely to be found on a board causes other concerns, but, PROPERLY applied, it will serve as primary ESD-protective packaging. Dick -----Original Message----- From: Zane H. Healy <healyzh(a)aracnet.com> To: Discussion re-collecting of classic computers <classiccmp(a)u.washington.edu> Date: Wednesday, May 12, 1999 12:27 AM Subject: Re: static bags cards from