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Chemistry Expert Committee

The mission of this committee is to improve the technical quality of environmental testing methodologies by providing tools (e.g., detection, quantitation and calibration) that assure the quality of data, which may be adopted by federal and state regulatory agencies. It is important that a balance between impact on laboratories and improvement in technical quality be maintained during this process.

Conference Calls: 1st Friday, 2:00pm - 3:30pm ET

Contact the Committee Chair or Program Administrator to participate in the calls of this committee.

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Mission Statement: To improve the technical quality of environmental testing methodologies by providing tools (e.g., detection, quantitation and calibration) that assure the quality of data, which may be adopted by federal and state regulatory agencies. It is important that a balance between impact on laboratories and improvement in technical quality be maintained during this process.

Objectives:

  • Create and adopt standards to support a strong technical approach to quantitation.
  • Create and adopt standards to support a strong technical approach to detection.
  • Create and adopt standards to support a strong technical approach to calibration.
  • Develop standards that are useable across various EPA and state programs.

Success Measures:
Adoption of standards into TNI requirements for laboratory accreditation

Considerations:

  • Developed tools should address: data comparability; flexible methods assessment; statistical assessment; uncertainty.
  • Any standard developed should incorporate data quality objectives.
  • Effective communication of standards and tools

Available Resources:
Committee members are volunteers. Some travel money to attend biannual Forum on Laboratory Accreditation

Additional Resources Required:
Funding to test tools that are developed

Anticipated Meeting Schedule:
Monthly conference calls. Periodic face-to face meetings

M. Valerie Slaven, Chair
Valerie Slaven Consulting Services
Sparta, IL
mslaven@teklabinc.com

Ken Jackson, Program Administrator
The NELAC Institute
Ballston Spa, NY
ken.jackson@nelac-institute.org

Francoise Chauvin
New York City DEP
Flushing, NY
francoisec@dep.nyc.gov

Eric Davis
Austin Water Utility
Austin, TX
Eric.Davis@austintexas.gov

Deb Gaynor
Phoenix Chemistry Services
N. Ferrisburgh, VT
dgaynor@phoenixchemistryservices.com

Shawn Kassner
Neptune Inc.
Lakewood, CO
skassner@neptuneinc.org

Scott Siders
PDC Laboratories, Inc.
Peoria, IL
ssiders@pdclab.com

Gale Warren
NYSDOH ELAP
Jamesville, NY
ggw01@health.state.ny.us

Colin Wright
Florida DEP
Tallahassee, FL
colin.wright@dep.state.fl.us


August 8, 2017 July 5, 2017
May 5, 2017 March 10, 2017
February 10, 2017 January 24, 2017

June 24, 2016
May 27, 2016 April 29, 2016
April 1, 2016 March 4, 2016
January 26, 2016 January 15, 2016

December 18, 2015
November 20, 2015 November 6, 2015
October 23, 2015 September 25, 2015
August 7, 2015 July 24, 2015
July 14, 2015 July 10, 2015
April 24, 2015 April 10, 2015
April 2, 2015 March 20, 2015
March 13, 2015 February 27, 2015
February 13, 2015 February 3, 2015
January 23, 2015 January 9, 2015

December 12, 2014
November 14, 2014 October 10, 2014
October 3, 2014 September 19, 2014
September 5, 2014 August 22, 2014
August 4-5, 2014 July 25, 2014
July 11, 2014 June 27, 2014
June 13, 2014 May 30, 2014
May 16, 2014 April 25, 2014
April 11, 2014 March 14, 2014
February 28, 2014

November 22, 2013 November 15, 2013
November 1, 2013 October 17, 2013
October 3, 2013 September 19, 2013
September 5, 2013 June 28, 2013
June 14, 2013 May 31, 2013
May 10, 2013 April 26, 2013
April 12, 2013 March 28, 2013
March 15, 2013 March 1, 2013
February 1, 2013 January 16, 2013
January 4, 2013

December 14, 2012 November 30, 2012
November 16, 2012 November 2, 2012
October 19, 2012 October 5, 2012
September 21, 2012 September 7, 2012
August 24, 2012 August 7, 2012
July 20, 2012 June 22, 2012
June 1, 2012 May 18, 2012
May 4, 2012 April 6, 2012
March 30, 2012 March 2, 2012
February 17, 2012 January 31, 2012
January 6, 2012

December 2, 2011 November 4, 2011
October 7, 2011 September 9, 2011
August 9, 2011 July 8, 2011
June 3, 2011 May 6, 2011
April 1, 2011 March 9, 2011
February 3, 2011 January 7, 2011
December 2, 2010 October 26, 2010

TNI has posted the following document and companion spreadsheet to help laboratories calculate Relative Standard Error as required by Section 1.7.1.1 of Module 4 of the TNI Laboratory Accreditation Standard.

How to Calculate RSE (PDF)

RSE Calculation Spreadsheet (Excel)


Definition and Procedure for the Determination of the Method Detection Limit (PDF)