Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Improvement of COMAR database

07.08.2008
COMAR, the international database for certified reference materials (CRMs) has been improved by BAM for the benefit of CRM users and producers worldwide.

The database represents a cooperation of 19 national or international institutes and is hosted by the BAM. The database informs about worldwide available certified reference materials (CRMs). CRMs provide "measurement benchmarks" for materials testing and chemical analysis and ensure reliability and worldwide comparability of measurements in these fields.

The use of CRMs is a basic requirement in quality assurance for any testing or calibration laboratory, especially in chemical analysis. COMAR has been established to help laboratories to find the proper CRM needed.

BAM has recently improved COMAR with the objectives to make searching in COMAR more simply and target-oriented ed and to perform the data update process more efficiently.

New COMAR features improving the search are:

- The search for a particular molecule name now results in all CRM hits referring to the same CAS (Chemical Abstracts Service) number, whatever the molecule names used by the producer for the CRM descriptions and for the data input were. This is accomplished by internal use of CAS numbers rather than specific molecule names in the search process. This helps to find a complete list of CRM hits in spite of the diversity of names for a specific compound as usually met in chemistry.

- Extension of the searchable "CRM description field" to 1000 characters in order to enable entering more CRM information in that field. The description field allows simple string search and is therefore an important and easy-to-handle tool.

- Implementation of a new search tool "matrix search", both as a separate tool or in combination with the search tool "chemical composition". This is a significant improvement with respect to finding a proper matrix CRM. Matrix CRMs are certified for the amount content of specified analytes in a defined matrix (e.g., soil, wood, sludge, foodstuffs) and they are key to major fields of analytical applications (e.g., environmental chemical analyses). Currently the new search tool is not released.

Prior to the release a substantial part of the existing COMAR CRM entries has to be assigned to the catalogue of matrix keywords supporting the search. For the matrix categorisation COMAR uses a list of matrix keywords recently developed by ISO REMCO (ISO's Committee on Reference Materials) as part of the ISO Technical Report 10989 "Categorisation of reference materials - Guidance on, and keywords used for RM categorisation" (publication in preparation). The assignment of the CRM entries to the new matrix keywords will take some time. COMAR will indicate the release on the COMAR website.

- The new combination of the search tool "chemical composition" with the search in the "CRM description field" makes handling more simply and allows for more carefully targeted queries.

COMAR contains information on about 11 000 CRM from more than 220 reference materials producers in 25 countries. Keeping the data up-to-date requires huge efforts by the cooperating institutes.

The new COMAR version allows a closer involvement of the various CRM producers in the update process. A new level of COMAR update rights has been created that can be assigned to single CRM producers. In the past COMAR was operated using only update rights of country wide validity assigned to the cooperating national or international institutes. The new level of update rights allows the COMAR partners to share the burden of data update with the affiliated CRM producers. That helps making the COMAR update more efficient and ensuring the provision of current CRM information.

CRM producers interested in entering their CRMs into COMAR are invited to contact the national COMAR partner or the COMAR central secretariat at BAM (contact points see COMAR website at: www.comar.bam.de). Interested CRM producer shall comply with the quality requirements of the relevant ISO guides (ISO Guides 31, 34, and 35).

The demand for information about available CRMs is still growing in parallel to the ever increasing number of chemical and biochemical measurements. COMAR has been a key source of information about worldwide available CRMs, covering a broad scope of application fields. The use of COMAR is free of charge and the number of COMAR users, logins and displayed search results has been growing for years. The recent improvements of COMAR are intended to meet this challenge also in the future.

Information: Dr. Thomas Steiger, Rita Pradel
COMAR secretariat
c/o BAM Federal Institute for Materials Research and Testing
phone : +49 30 8104 5860 / 5862
e-mail: comar@bam.de

Dr. Ulrike Rockland | idw
Further information:
http://www.bam.de
http://www.comar.bam.de

More articles from Information Technology:

nachricht New software speeds origami structure designs
12.10.2017 | Georgia Institute of Technology

nachricht Seeing the next dimension of computer chips
11.10.2017 | Osaka University

All articles from Information Technology >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Neutron star merger directly observed for the first time

University of Maryland researchers contribute to historic detection of gravitational waves and light created by event

On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...

Im Focus: Breaking: the first light from two neutron stars merging

Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.

Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....

Im Focus: Smart sensors for efficient processes

Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).

When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...

Im Focus: Cold molecules on collision course

Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.

How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...

Im Focus: Shrinking the proton again!

Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.

It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ASEAN Member States discuss the future role of renewable energy

17.10.2017 | Event News

World Health Summit 2017: International experts set the course for the future of Global Health

10.10.2017 | Event News

Climate Engineering Conference 2017 Opens in Berlin

10.10.2017 | Event News

 
Latest News

Ocean atmosphere rife with microbes

17.10.2017 | Life Sciences

Neutrons observe vitamin B6-dependent enzyme activity useful for drug development

17.10.2017 | Life Sciences

NASA finds newly formed tropical storm lan over open waters

17.10.2017 | Earth Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>