Download or read book Guidelines on Representative Drug Sampling written by United Nations and published by United Nations Publications. This book was released on 2009 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present guidelines describe a number of sampling methods, from arbitrary methods with a statistical background. They focus on sampling in cases where large numbers of relatively homogeneous material are available. They do not deal with so-called tactical sampling, which may be applied for house-searches or in clandestine laboratory investigations. Its aim is to support drug analysis laboratories in the selection of their sampling strategies and best working practices.