Interlaboratory Proficiency Tests carried out in 2014

on . . Hits: 14696

precision_accuracy   Last year, a total of 40 laboratories from 14 different countries participated in an interlaboratory test to check proficiency according to European standard EN 13725/2003 organized by the company Odournet.Test criteria used in this comparison to assess the results were the precision under repeatability conditions r and accuracy A for 1-butanol of the laboratory according to EN 13725. There were 38 participants from Europe and 2 from Chile.

   A number of 34 laboratories in this study stated that they have been accredited for EN 13725 olfactometry measurements according to EN ISO/IEC 17025. The following table shows the list of participants.

 

Countrynumber of participants
Belgium 4
Chile 2
Denmark 2
Estonia 1
France 2
Germany 12
Italy 2
Lithuania 2
Netherlands 2
Norway 1
Poland 1
Portugal 1
Spain 2
United Kingdom 6

 

   The participation in Proficiency Testing (PT) for laboratories accredited to ISO17025 is not facultative.

   However, reviewing the documents about proficiency testing EA-4/18 INF: 2010 and the ILAC-P9 published by the The European Accreditation Co-operation there is not statement about how often a lab must carry out a proficiency testing.

   That is, any lab can choose the frequency of their PT either yearly or every 10 years as long as it is justified in their "PT strategy".

   So anyway, there are not many laboratories that showed some concern this year about their precision and accuracy. The laboratories of just 14 countries out of 33 CEN members had some interest in participating in a PT this year. The CEN countries with no lab participating in the PT were Turkey, Romania, Greece, Czech Republic, Hungary, Austria, Switzerland, Bulgaria, Finland, Slovakia, Ireland, Croatia, the former Yugoslav Republic of Macedonia, Slovenia, Latvia, Cyprus, Luxembourg, Malta and Iceland. Here there is a there is a graph of these countries ordered by population according to the Eurostats figures for 2014. graph1

  In total there is a population of around 180 million people in Europe that does not have a lab that run a PT in 2014. Of course, doing a PT on an annually basis is not compulsory, plus its cost might be a bit high for some labs, but it is a necessary tool to be used in order to check the quality of the work of a lab.

  Here there is another graph that shows just how many people is served by each olfactometer that run a PT in 2014.

million inhabitants olfactometer

   In this graph the best served countries according to this peculiar classification are on the right hand side and the not so well on the left hand side. Coutries like Estonia, Lithuania, Belgium and Denmark have a very high coefficient of olfactometers running a PT in 2014 per million inhabitants. On the other side, Poland, France, Italy and Spain are not doing so good. 

  Poland is a bit of an exception as three accredited laboratories organized an interlaboratory PT test by themselves according to the European Norm. In this case the ratio would go down to 9,5 million inhabitants per lab that run a PT testing in 2014 in Poland. Provided that the PT was adequately performed, of course.

  That leaves France, Italy and Spain as the European countries that need some pushing on this Interlaboratory PT 2014 matter. It would be interesting to see how many labs are accredited for EN 13725 olfactometry measurements according to EN ISO/IEC 17025 in these countries.

  There are other countries that have a sister norm of the European Norm, such as AS/NZS 4323.3:2001 for Australia and New Zealand, the NCh3190 in Chile and the NTC 5880 in Colombia and many other countries with standards on olfactometry such as USA with the ASTM E679-04: 2011 or Japan. There was representation of these countries in previous editions, however, this year just two labs of Chile carried out a PT. Not a very successful call for PTs out of Europe here I would say.

   Last but not least, there is a need to check also proficiency on sampling odours.

   Taking an odour sample is a very important step to take into account in the estimation of the overall uncertainty of a lab, and the Hessian Agency for the Environment and Geology (HLUG) is organizing a regular test with over 15 labs for the very first time. This ILC will consider not only analysis, but also stack sampling. But this is another article...

   Anything to say?, just use the comments below.

 


If you find this article interesting, you might also be interested in these articles.

 

Comments (0)

There are no comments posted here yet

Leave your comments

  1. Posting comment as a guest.
Attachments (0 / 3)
Share Your Location

Please note that this site uses cookies in order to work properly.

See more about our cookie policy Learn more

I understand

Please read the following to learn more about our cookies policy:

 

What are cookies?

   A cookie is a text file stored in a user’s web browser on any device they use to access a website that holds information regarding the user’s visit, such as preferences. When the user returns, the browser provides the cookie with the stored information to the site.

What cookies are used for?

   Cookies are used for adjusting a website’s content to fit a user’s preferences and optimize the website. They store useful information that improve the user’s experience of a website. They are most commonly used for:

  •     Recognizing the type of device a user is browsing with and any preferences applied to optimize the website specifically for the device.
  •     Creating statistics that help website owners to understand how their users interact with their website, which allows them to improve their structure and content.

What types of cookies are used?

   There are two types of cookies: persistent cookies and session cookies. Persistent cookies remain on your hard drive for a period of time specified in the cookie’s file parameters or until removed manually. When you return to a website and it requires you to login again despite previously storing your login information, it is usually because the persistent cookie expired; this helps to increase security while maintaining accessibility.

   Session cookies, on the other hand, are used temporarily and expire once the website or browser is closed. They are used to track user activity on a website during a single visit. When a website requires that you verify your age or location once every visit before allowing you to view content and without requiring additional personal details, that is a session cookie at work.

Do cookies include personal data?

   If there is a need for the collection of personal information, such as for creating accounts, then cookies may store personal information. However, it is required by data protection law that users are informed of the collection of personal data. This data will also be encrypted to render it inaccessible for unauthorized users.

Managing cookies

   By default, browsers are configured to accept cookies. However, these settings may be changed to block cookies entirely, or to inform the user each time they are used. Detailed information about cookies and the options associated with them are available in each browsers’ settings.

Which cookies does collect olores.org?

   Olores.org collect cookies for 2 purposes:

  • Register statistical data.
  • Set language preferences.

   In addition we use third party cookies through Statcounter to collect different data.

StatCounter Analytics Cookies

   StatCounter is a web analytics service. We use StatCounter to track activity on our website. These stats help us to understand how people are interacting with our website and to improve the design and functionality of our site so that we can offer a better online experience to our visitors. If you visit olores.org, a StatCounter analytics cookie (called "is_unique") may  be placed in your browser.  This cookie is used only to determine whether you are a first-time or returning visitor and to estimate unique visits to the site. No personal information is stored in the cookie.

Refuse Statcounter cookies.

You may set your browser to refuse/accept StatCounter analytics cookies by clicking here.

NOTES:

    • Your decision to refuse/accept StatCounter analytics cookies applies to all websites which use the StatCounter service (including the StatCounter site itself).
    • If you refuse all StatCounter analytics cookie, a refusal cookie (called "refusal_cookie") will be set to remember this preference and any existing StatCounter analytics cookies in your browser will be destroyed.
    • If you delete/remove/destroy the refusal cookie, you must revisit this page in order to re-set your preference.
    • The refusal cookie is set only for your current browser and machine. If you use multiple browsers/machines, you must set a refusal cookie in each case.
    • You can also change your cookie settings directly in your browser. Learn more about cookies and how to manage them here: http://www.allaboutcookies.org/cookies/index.html
    • Or you can learn about how to adjust cookie settings for specific browsers here: