A hair collection device useful in testing for drugs and hazardous materials, comprising an outer barrel with a barrel lumen and a hair collection oriface; an inner hair storage container insertable in and removable from the barrel lumen, and comprising a hair storage lumen and a second hair collection...http://www.google.com.au/patents/US6478750?utm_source=gb-gplus-sharePatent US6478750 - Hair collection device and methods of use thereof
