1. BIPM, IEC, IFCC, ILAC, ISO, IUPAC, IUPAP, OIML (2008) International vocabulary of metrology—basic and general concepts and associated terms (VIM). 3rd edn. JCGM 200. www.bipm.org/vim Last visited 11 Oct 2010
2. Pure food and drug Act of 30 June 1906, 34 Stat. 768, Ch. 3915, Pub Law 384
3. Food, drug, and cosmetic Act, 1938. 21 USC 301
4. ISO (2005) General requirements for the competence of testing and calibration laboratories. http://www.iso.org/iso/catalogue_detail.htm?csnumber=39883 . Last visited 11 Oct 2010
5. ISO/IEC (2005) Guide 17025:2005(E). General requirements for the competence of testing and calibration laboratories. http://www.iso.org/iso/catalogue_detail.htm?csnumber=39883 . Last visited 11 Oct 2010