Method Validations
for regulatory nitrate-n analysis
METHOD VALIDATIONS
the nelac institute method codes
| METHOD CODE | METHOD REFERENCE | REVISION DATE | METHOD TITLE | OFFICIAL METHOD TITLE |
| 40005285 | USGS I-2547-11 | 2011 | Standard Level Colorimetric Determination of Nitrate plus Nitrite by Enzymatic Reduction, Automated Discrete Analyzer Method | Standard Level Colorimetric Determination of Nitrate plus Nitrite by Enzymatic Reduction, Automated Discrete Analyzer Method |
| 40005296 | USGS I-2548-11 | 2011 | Low-Level Colorimetric Determination of Nitrate plus Nitrite by Enzymatic Reduction, Automated Discrete Analyzer Method. | Low-Level Colorimetric Determination of Nitrate plus Nitrite by Enzymatic Reduction, Automated Discrete Analyzer Method |
| 30034107 | ASTM D7781-14 | 2014 | Nitrate-Nitrite in Water by Nitrate Reductase | Standard Test Method for Nitrate-Nitrite in Water by Nitrate Reductase |
| 40 CFR Part 136 | EPA N07-0003 | 2017 | Nitrate Reductase Nitrate-Nitrogen Analysis | Determination of Nitrate plus Nitrite by Enzymatic Reduction, Automated Discrete Analyzer Method |
IMPORTANT LINKS & DOCUMENTS
U.S. EPA
Safe Drinking Water Act Reporting
- EPA 40 CFR Part 136 | Vol. 81, No. 138 | Expedited Approval of Alternate Test Procedures for the Analysis of Contaminants Under the Safe Drinking Water Act; Analysis and Sampling Procedures | Published August 28, 2017
- EPA SDWA Expedited Approval of Alternative Test Procedures Fact Sheet 2016
- Alternate Test Procedure Validation Report: Enzymatic Reduction Method of Nitrate-N Analysis in Drinking Water
- EPA SDWA Method for Nitrate Reductase Nitrate-Nitrogen Analysis of Drinking Water
Clean Water Act Reporting
- Whitepaper: Enzymatic Nitrate Analysis for EPA Regulated Laboratories Using Nitrate Reductase
- Review of NECi Method N07-0003, Method for Nitrate Reductase Nitrate-Nitrogen Analysis | ATP Review Letter | April 4th, 2014 | U.S. EPA Office of Science and Technology
- EPA Alternate Test Procedure Validation Report for Enzymatic Reduction Method of Nitrate-N Analysis | CWA Reporting | Published February 20th, 2014
- U.S. EPA Federal Register | Clean Water Act Methods Update Rule for the Analysis of Effluent; Proposed Rule | Vol. 80 No. 33 | Published February 19, 2015
- U.S. EPA Clean Water Act Analytical Methods | Methods Update Rule 2015
- U.S. EPA Clean Water Act Analytical Methods | Alternate Test Procedures
ASTM International
U.S. Geological Survey
- Colorimetric Determination of Nitrate plus Nitrate in Water by Enzymatic Reduction, Automated Discrete Analyzer Methods
- Analytical Properties of Some Commercially Available Nitrate Reductase Enzymes Evaluated as Replacements for Cadmium in Automated, Semiautomated, and Manual Colorimetric Methods for Determination of Nitrate plus Nitrite in Water
- National Environmental Methods Index (NEMI) USGS-NWQL: I-2547-11: Standard Level Colorimetric Determination of Nitrate plus Nitrate in Water by Enzymatic Reduction, Automated Discrete Analyzer Method
- National Field Manual for the Collection of Water-Quality Data Chapter A4: Collection of Water Samples
epa method validation
PROGRESS TIMELINE
