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Reference ID U27ZZ0 
Headline Research in the WHO European region 
Description UNIVERSAL YARDSTICKS



Many substances used in medicine cannot be assessed by chemical and physical tests alone because they are impure mixtures of great complexity. The only way to measure their potency is by tests on animals (as in the case of vaccines, for example) or on micro-organisms (as in the case of antibiotics) and by comparing the result of a test in which a known “standard” sample of the substance has been used. Such samples are made available to laboratories all over the world by two international reference laboratories designated by WHO, one in London and one in Copenhagen.



Our photo shows in what form these standards are sent out. 
Related https://iris.who.int/handle/10665/366771
Asset date 01/01/1962 
Country, area, WHO office United Kingdom
WHO Region EURO
Copyright © WHO / Doreen Spooner 
Consent No 
File size 1.76 MB 
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Public 
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