Found via the RS DesignSpark website, an introduction into what polymer=20 caps are, and their benefits. http://tinyurl.com/mggc49j Colin -- cdb, 25/04/2014 =20 -- colin@btech-online.co.uk --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .