World  Metrology Day has become an established annual event during which more than  eighty States celebrate the impact of measurement on our daily lives, no part  of which is untouched by this essential, and largely hidden, aspect of modern  society. Previous themes have included topics such as measurements for  innovation, and measurements in sport, the environment, medicine, and trade.  
      UNESCO and  IUPAC have decided to designate 2011 as The  International Year of Chemistry (IYC 2011), a worldwide celebration of the  achievements of chemistry and its contributions to the well-being of humankind.  Under the unifying theme “Chemistry - our life, our future,” IYC 2011 will  offer a range of interactive, entertaining, and educational activities for all  ages. The year 2011 also coincides with the centenary of the Nobel Prize in Chemistry awarded to Madame Marie Curie - an opportunity to celebrate the contributions of women to science.  
      Chemistry is a  creative science that is essential for sustainability and improvements to our  way of life. All known matter is composed of pure chemical  elements or of compounds made from those elements. Humankind’s understanding of  the material nature of our world is grounded in our knowledge of chemistry. Molecular transformations are central to the  production of foodstuffs, medicines, fuels, and metals - i.e. virtually all  manufactured and extracted products.  
      The World  Metrology Day 2011 message Chemical  measurements for our life, our future builds upon the IYC 2011 theme. Chemistry  and chemicals pose particularly interesting challenges to the measurement  community: thousands of compounds must be measured, and the range of concentrations  at which some compounds must be reliably detected, quantified, and in some  cases regulated can nowadays extend down to parts per billion (or even trillion).  Yet the ability to make appropriately accurate and reliable chemical  measurements is crucial to our economy, our environment and our personal well being;  in short we must not underestimate the importance of Chemical measurements for our life, our future. 
      National measurement systems must rely on agreed  standards, units, and techniques to make consistent, reproducible and accurate  measurements. Each system of national measurement standards and laboratories is  then linked into a world-wide network coordinated by the International Bureau of  Weights and Measures (BIPM). This network gives society access to accurate  measurements in order to meet today’s challenges in healthcare, within the  environment and in all the new technologies and processes. In industry and  commerce, it helps ensure product quality and interoperability, eliminates  waste, raises productivity, and facilitates trade based on agreed measurements  and tests. It also enables scientists to use a common language to underpin  their collaboration across the world and ensure that their exploits can be  taken up and accurately reproduced by companies wherever they operate. 
      National and  regional metrological regulations must be based on agreed technical  requirements in order to help avoid or eliminate technical barriers to trade,  ensure fair trade practice, care for the environment and maintain a  satisfactory healthcare system. The International Organization of Legal  Metrology (OIML) has developed a worldwide technical structure by means of  which it provides its Members with technical Recommendations and Documents as  well as Guides, Vocabularies and other publications. When developing their  metrological legislation and regulations, OIML Members can ensure they meet  these objectives by including the requirements contained in the relevant OIML  publications. 
      This year, in  their messages to the world of metrology, Governments, companies, academics, and  indeed to the man or woman in the street, the Directors of the International  Bureau of Weights and Measures and of the International Bureau of Legal Metrology  both highlight the importance of accurate, reliable and internationally  accepted chemical measurements in the modern world as it deals with today’s  grand challenges. 
         
             
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