Navigation Links
Uniform analyses for clean drinking water in Europe
Date:12/10/2009

oncept for conducting round-robin tests by PTB, AQS BW and IWW uses metrologically traceable reference values with possible uncertainties in the range of one percent or less. These reference values serve as a basis for the increasingly required international comparability of measurement values and are, moreover, available to the participating laboratories as reliable reference points for checking the accuracy of their measuring methods.

This is made possible by very accurate sample preparation: The sample preparations are performed by gravimetric or volumetric addition of certain amounts of the analytes to tap water (matrix). The reference values are determined from the added amounts as well as the concentration of the analytes present from the outset in the original tap water. To determine the latter is difficult, however, due to the mostly low concentration. It was now possible to demonstrate that the participants' results could be drawn on to determine the initial concentration of the water. To this end, a method similar to that of the standard addition was developed, with which these initial concentrations were obtained through extrapolation, without additional work expended and with sufficiently good uncertainty.

Contact at PTB: Detlef Schiel, Working Group 3.11 Inorganic Analytics, Tel.: +49 531 592-3110, e-mail: detlef.schiel@ptb.de Olaf Rienitz, Working Group 3.11 Inorganic Analytics, Tel.: +49 531 592-3318, e-mail: olaf.rienitz@ptb.de


'/>"/>
Contact: Detlef Schiel
detlef.schiel@ptb.de
49-531-592-3110
Physikalisch-Technische Bundesanstalt (PTB)
Source:Eurekalert

Page: 1 2

Related biology news :

1. Species diversity helps ASU researchers refine analyses of human gene mutations
2. LSU researchers challenge analyses on sustainability of Gulf fisheries
3. Research is vital to a cleaner, greener, low carbon future
4. Genomic research will enable greener cleanup of military explosive test sites
5. RIT scientist shines laser light on methane in pursuit of clean fuel
6. Developing enzymes to clean up pollution by explosives
7. LLNL technology cleans up Visalia Superfund 100 years ahead of schedule
8. Hot microbes cause groundwater cleanup rethink
9. LSU receives $3.6 million to fund center studying hazardous waste cleanup and health impacts
10. Clean fuels could reduce deaths from ship smokestacks by 40,000 annually
11. New cleaning protocol for future search for life missions
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/17/2014)... 2014 Research and Markets ( ... "Global Chemical Sensor Market 2015-2019" report ... http://photos.prnewswire.com/prnh/20130307/600769 One major trend upcoming ... medical sensors in biomedical applications. Chemical sensors help ... correct diagnosis during surgical procedures. The Global Chemical ...
(Date:12/11/2014)... , Dec. 09, 2014 Research and ... ( http://www.researchandmarkets.com/research/9ql3kr/biometrics_market ) has ... in India 2015-2019" report to their offering. ... this market is the adoption of multimodal biometric ... characteristic of an individual for verification and identification ...
(Date:12/10/2014)...  Valencell, a leader in performance biometric data sensor ... from its licensees for highly accurate, clinically validated biometric ... coming from fitness and health sectors, but first responders/military ... is only as useful as the biometric data it ... in long-term mass consumer adoption of wearable products," said ...
Breaking Biology News(10 mins):Global Chemical Sensor Market 2015-2019: Key Vendors are Abbott Laboratories, Bayer, Hoffmann La-Roche, Johnson & Johnson, NGK Spark Plugs and Robert Bosch 2Biometrics Market in India 2015-2019: Key Vendors are 3M Cogent, NEC, Safran and Suprema 2Wearable Technology Products Demand Highly Accurate Biometric Technology 2
... Cambridge, Mass., and Worcester, Mass., March 1, 2012 ... RNAi therapeutics company, and the University of Massachusetts ... Patent Office (EPO) has upheld the Tuschl I ... held in Munich, Germany. The requested claims of ...
... Italian and Swiss researchers confirm that induced hyperammonaemia significantly ... available in the March issue of Hepatology , ... American Association for the Study of Liver Diseases, show ... of cirrhotic patients to produce restorative sleep. ...
... with implants. Often following the procedure, they are unable to ... has become fixated in the bone. Now, for the first ... allows titanium screws to adhere to the bone better and ... results are good. The study, led by Per Aspenberg, ...
Cached Biology News:Alnylam and UMass Medical School announce Tuschl I patent upheld in European opposition proceedings 2Alnylam and UMass Medical School announce Tuschl I patent upheld in European opposition proceedings 3Cirrhotic patients experience increased daytime sleepiness from higher ammonia levels 2New method for stronger dental implants 2
(Date:12/24/2014)... MD (PRWEB) December 23, 2014 ... into law H.R. 83, the Omnibus and Continuing ... first time, made hydrocephalus a condition eligible to ... Programs (CDMRP) administered by the Department of Defense ... with its allies on Capitol Hill, is celebrating ...
(Date:12/24/2014)... Nashville, Tenn. (PRWEB) December 23, 2014 ... Hill was elected treasurer for the American Society ... to advancing knowledge and research in reproductive medicine. ... fills a seat on the executive board and will ... , Dr. Hill has actively supported ASRM since ...
(Date:12/24/2014)... Dec. 23, 2014 China Biologic Products, ... a leading fully integrated plasma-based biopharmaceutical company in ... its majority-owned subsidiary, Shandong Taibang Biological Products Co. ... from the China Food and Drug Administration (the ... As previously disclosed in the Company,s public filings, ...
(Date:12/24/2014)... ST. LOUIS , Dec. 23, 2014 /PRNewswire/ ... announced today that the waiting period under the ... with the acquisition expired on December 22, 2014, ... and review requirement for the acquisition of the ... U.S. antitrust clearance satisfies another condition to ...
Breaking Biology Technology:Rare Brain Condition Now Eligible for Department of Defense Research Dollars 2Nashville Fertility Center Announces Dr. George A. Hill Selected to Serve as ASRM Treasurer for 2014-15 2Nashville Fertility Center Announces Dr. George A. Hill Selected to Serve as ASRM Treasurer for 2014-15 3China Biologic Receives GMP Certification for New Coagulation Factor Facility 2China Biologic Receives GMP Certification for New Coagulation Factor Facility 3Acquisition of Sigma-Aldrich by Merck KGaA, Darmstadt, Germany, Receives U.S. Antitrust Clearance 2Acquisition of Sigma-Aldrich by Merck KGaA, Darmstadt, Germany, Receives U.S. Antitrust Clearance 3
... NATICK, Mass. and SAN FRANCISCO, Nov. 8, 2011 ... ) reports positive long-term data from the PERSEUS ... effectiveness outcomes for the ION™ (TAXUS Element) Paclitaxel-Eluting ...  Results were presented today by PERSEUS clinical program ...
... SQUARE, Pa., Nov. 8, 2011 Kibow Biotech, Inc. ... of Renal Week, it is changing the brand name ... Kibow® Biotics, this patented and clinically tested probiotic formulation ... there is growing recognition of the scientific and health ...
... Valkee ( http://valkee.com ), the inventor ... from the University of Oulu present two clinical trials ... Anxiety Disorders in Budapest on November 9 th -11 ... the peer-reviewed conference supplement of the International Journal of ...
Cached Biology Technology:Boston Scientific Platinum Chromium ION™ Stent Demonstrates Positive Outcomes in PERSEUS Clinical Program 2Boston Scientific Platinum Chromium ION™ Stent Demonstrates Positive Outcomes in PERSEUS Clinical Program 3Boston Scientific Platinum Chromium ION™ Stent Demonstrates Positive Outcomes in PERSEUS Clinical Program 4Boston Scientific Platinum Chromium ION™ Stent Demonstrates Positive Outcomes in PERSEUS Clinical Program 5Kibow Changes Name of Flagship Kidney Function Support Product to 'RENADYL™' 2Bright Light into the Ear Canal Treats Seasonal Depression Effectively in Two Clinical Trials Presented by Valkee and University of Oulu 2Bright Light into the Ear Canal Treats Seasonal Depression Effectively in Two Clinical Trials Presented by Valkee and University of Oulu 3
Mouse monoclonal antibody raised against a partial recombinant TTC3. NCBI Entrez Gene ID = TTC3...
... Mouse monoclonal antibody raised against ... Immunogen: TOPORS ... a.a) partial recombinant protein with ... Accession Number: NM_005802 ...
Mouse monoclonal antibody raised against a partial recombinant PASK. NCBI Entrez Gene ID = PASK...
Agarose II (Low Melt)...
Biology Products: