1. Anon., 1989a. Official Control of Foodstuffs Directive (89/397) of 14th June 1989. OJ No. L186/23, 30.6.89.
2. Anon., 1989b. EN45001. General criteria for the operation of testing laboratories.
3. Anon., 1990. ISO/IEC Guide 25. General requirements for the competence of calibration and testing laboratories.
4. Anon., 1993. Additional Food Control Measurers Directive (93/99) of 29 December 1993. OJ No. L290/14, 24.11.93.
5. Anon., 1995a. EN45003. Calibration and testing laboratory accreditation system — general requirements for operation and recognition.