Metrological assurance in radiochemical production

Metrological Timelines in Traceability

There is a growing requirement for an internationally accepted system of recognition of measurement capabilities and relationships within and among countries, to facilitate seamless global commerce and trade. As a result, metrologists worldwide have recently developed increased interest in the concept and definition of traceability. Classically, traceability provides a way of relating the resul...

Radiochemical Techniques

Radiochemical Analysis of Water

This report describes the methods and procedures used by the U.S. Geological Survey Tritium Laboratory to analyze natural waters for tritium activity. Samples having low activity are electrolytically enriched in cells with nickel and steel electrodes, and their tritium concentration is subsequently determined by liquid scintillation and gas phase counting techniques. Samples having high tritium...

Food Safety Quality Assurance Programs in the Danish Swine Production

Despite Denmark’s limited size of just 44,000 sq km, the country produced 22 million pigs, 137 million broilers and 595,000 cattle in 2001. Denmark has approximately 14,000 swine producers, 95% of whom are members of the 150-year-old nationwide producer cooperative, the Danish Bacon and Meat Council. With a human population of 5.3 million inhabitants, domestic consumption accounts for only 15% ...

Metrological Reliability of Medical Devices

The prominent development of health technologies of the 20 century triggered demands for metrological reliability of physiological measurements comprising physical, chemical and biological quantities, essential to ensure accurate and comparable results of clinical measurements. In the present work, aspects concerning metrological reliability in premarket and postmarket assessments of medical de...