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  2. Air Emission Measurement Center (EMC)
  3. Test Methods

EMC Promulgated Test Methods

These methods have been proposed or promulgated in the Federal Register and codified in the Code of Federal Regulations (CFR).

Information Related to Test Methods

TitleDate
OTM-59, Method for the Correction of Residual Ammonia in Condensable Particulate Matter Samples Collected according to Method 202 (pdf) (440.87 KB) March 2025
Chronology of Test Methods (pdf) (1.12 MB, 8/31/2023) August 2023
Test Methods and Performance Specifications for Air Emission Sources; Final Rule - FR Notice 10/7/2020 (pdf) (1,510 KB)October 2020
Revisions to Test Methods and Testing Regulations; Final Rule 11/14/2018 (pdf) (893 KB)November 2018
Revisions to Test Methods and Testing Regulations; Final Rule, 8/30/2016 (pdf) (28 pp, 993 KB)August 2016
Revisions to Test Methods and Testing Regulations; Final Rule, 02/17/2014 (pdf) (68 pp, 1.8 MB)February 2014
Amendments for Testing and Monitoring Provisions; Final Rule, 10/17/2000 (pdf) (531 pp, 4.8 MB)October 2000
Response to Comments on "Amendments for Testing and Monitoring Provisions"August 1997
Amendments for Testing and Monitoring Provisions; Proposed Rule (pdf) (9 pp, 230 KB)August 1997

Test methods

The methods carry an xx, 1xx, 2xx, or 3xx alphanumeric designation. The xx, 1xx, and 3xx numbered methods are directly cited by specific regulations for determining compliance under 40 CFR Parts 60, 61, and 63, and may be used by sources for application as cited by the regulations and the method itself without further EPA approval.

The 2xx series methods are promulgated to facilitate incorporation in applicable State Implementation Plans. The 2xx methods, like the xx, 1xx, and 3xx series methods, include quality control and quality assurance procedures that must be met.

Federal Register proposed test methods have been published in the Federal Register as proposed rules, but have not yet been promulgated.

On each test method page, there is a printable version of the method in PDF.

MethodTitle
Method 1Traverse Points
Method 1ASmall Ducts
Method 2Velocity - S-type Pitot
Method 2AVolume Meters
Method 2BExhaust Volume Flow Rate
Method 2CStandard Pitot
Method 2DRate Meters
Method 2ELandfill Gas Production Flow Rate
Method 2FFlow Rate Measurement with 3-D Probe
Method 2GFlow Rate Measurement with 2-D Probe
Method 2HFlow Rate Measurement with Velocity Decay Near Stack Walls
Method 3Molecular Weight
Method 3AOxygen and Carbon Dioxide Concentrations - Instrumental
Method 3BOxygen and Carbon Dioxide Concentrations - Orsat Analyzer
Method 3CCarbon Dioxide, Methane, Nitrogen and Oxygen Concentrations - Thermal Conductivity Detector
Method 4Moisture Content
Method 5Particulate Matter - Stationary Sources
Method 5AParticulate Matter Asphalt Roofing
Method 5BParticulate Matter Nonsulfuric Acid
Method 5DParticulate Matter Baghouses
Method 5EParticulate Matter Fiberglass Plants
Method 5FParticulate Matter Fluid Catalytic Cracking Unit
Method 5GParticulate Matter Wood Heaters from a Dilution Tunnel
Method 5HParticulate Matter Wood Heaters from a Stack
Method 5ILow Level Particulate Matter Emissions
Method 6Sulfur Dioxide - Stationary Sources
Method 6ASulfur Dioxide and Carbon Dioxide
Method 6BSulfur Dioxide and Carbon Dioxide - Daily Average Emissions
Method 6CSulfur Dioxide - Instrumental Analyzer Procedure
Method 7Nitrogen Oxide - Stationary Sources
Method 7ANitrogen Oxide - Ion Chromatographic Method
Method 7BNitrogen Oxide - Ultraviolet Spectrophotometry
Method 7CNitrogen Oxide - Colorimetric Method
Method 7DNitrogen Oxide - Ion Chromatography
Method 7ENitrogen Oxide - Instrumental Analyzer
Method 8Sulfuric Acid Mist
Method 9Visual Opacity
Method 10Carbon Monoxide - Instrumental Analyzer
Method 10ACarbon Monoxide in Certifying Continuous Emission Monitoring Systems
Method 10BCarbon Monoxide from Stationary Sources
Method 11Hydrogen Sulfide Content in Fuel
Method 12Inorganic Lead
Method 13ATotal Fluoride - SPADNS Zirconium Lake
Method 13BTotal Fluoride - Specific Ion Electrode
Method 14Fluoride for Primary Aluminum Plants
Method 14ATotal Fluoride Emissions from Selected Sources at Primary Aluminum Plants
Method 15Hydrogen Sulfide, Carbonyl Sulfide, and Carbon Disulfide
Method 15ATotal Reduced Sulfur Emissions from Sulfur Recovery Plants in Petroleum Refineries
Method 16Sulfur - Semicontinuous Determination
Method 16ATotal Reduced Sulfur - Impinger
Method 16BTotal Reduced Sulfur - Gas Chromatography
Method 16CTotal Reduced Sulfur - Real Time Data
Method 17In-Stack Particulate
Method 18Volatile Organic Compounds - Gas Chromatography
Method 19Sulfur Dioxide Removal and Particulate, Sulfur Dioxide and Nitrogen Oxides from Electric Utility Steam Generators
Method 20Nitrogen Oxides from Stationary Gas Turbines
Method 21Volatile Organic Compound Leaks
Method 22Visual Determination of Fugitive Emissions  
Method 23Dioxins and Furans
Method 24Surface Coatings
Method 24APublication Rotogravure Inks and Related Publication Rotogravure Coatings
Method 25Gaseous Nonmethane Organic Emissions
Method 25AGaseous Organic Concentration - Flame Ionization
Method 25BGaseous Organic Concentration - Infrared Analyzer
Method 25CNonmethane Organic Compounds Landfill Gases
Method 25DVolatile Organic Concentration of Waste Samples
Method 25EVapor Phase Organic Concentration in Waste Samples
Method 26Hydrogen Halide and Halogen
Method 26AHydrogen Halide and Halogen - Isokinetic Method
Method 27Vapor Tightness of Gasoline Tank - Pressure Vacuum
Method 28Certification and Auditing - Wood Heaters
Method 28AAir to Fuel Burn Rates - Wood Fired Appliances
Method 28RCertification and Auditing of Wood Heaters
Method 28 WHH
Measurement of Particulate Emissions and Heating Efficiency of Wood-Fired Hydronic Heating Appliances
Method 28 WHH PTSCertification of Cord Wood-Fired Hydronic Heating Appliances with Partial Thermal Storage
Method 29Metals Emissions from Stationary Sources
Method 30AMercury Instrumental Procedure
Method 30BMercury Sorbent Trap Procedure
Method 101Mercury from Chlor-Alkali Plants
Method 101AMercury from Sewage Sludge Incinerators
Method 102Mercury from Chlor-Alkali Plants - Hydrogen Streams
Method 103Beryllium Screening Method
Method 104Beryllium Emissions Determination
Method 105Mercury in Wastewater Treatment Plant Sewage Sludge
Method 106Vinyl Chloride - Stationary Sources
Method 107Vinyl Chloride Content of Inprocess Wastewater Samples
Method 107AVinyl Chloride Content of Solvents
Method 108Particulate and Gaseous Arsenic Emissions
Method 108AArsenic Content in Ore Samples from Nonferrous Smelters  - 108A
Method 108BArsenic Content in Ore Samples from Nonferrous Smelter - 108B
Method 108CArsenic Content in Ore Samples From Nonferrous Smelters - Molybdenum Blue Photometric Procedure
Method 111Polonium-210 Emissions
Method 114Radionuclides - Stationary Sources
Method 115Radon-222 Emissions
Method 201PM10 Emissions - Exhaust Gas Recycle Procedure
Method 201APM10 and PM2.5 - Constant Sampling Rate Procedure
Method 202Condensable Particulate Matter
Method 203AOpacity Determination for Time-Averaged Regulations
Method 203BOpacity Determination for Time-Exception Regulations
Method 203COpacity Determination for Instantaneous Regulations
Method 204Permanent (PTE) or Temporary Total Enclosure (TTE) for Determining Capture Efficiency
Method 204AVolatile Organic Compounds in Liquid Input Stream
Method 204BVolatile Organic Compounds in Captured Stream
Method 204CVolatile Organic Compounds in Captured Stream - Dilution Technique
Method 204DFugitive Volatile Organic Compounds From Temporary Total Enclosure (TTE)
Method 204EFugitive Volatile Organic Compounds From Building Enclosure
Method 204FFugitive Volatile Organic Compounds From Liquid Input Stream - Distillation
Method 205Gas Dilution Calibration
Method 207Presurvey for Corn Wet-Milling Facilities
Method 301Validation Protocol - Various Waste Media
Method 303By-product Coke Oven Batteries
Method 303ANonrecovery Coke Oven Batteries
Method 304ABiodegradation Rates - Vent Option
Method 304BBiodegradation Rates - Scrubber Option
Method 305Potential Volatile Organic Compounds in Waste
Method 306Chromium Emissions - Electroplating and Anodizing
Method 306AChromium Emissions Electroplating and Anodizing - Mason Jar Method
Method 306BSurface Tension for Tanks Electroplating and Anodizing
Method 307Emissions from Solvent Vapor Cleaners
Method 308Methanol Emissions
Method 310AResidual Hexane
Method 310BResidual Solvent
Method 310CResidual N-Hexane in EDPM Rubber
Method 311Hazardous Air Pollutant Compounds in Paints and Coatings
Method 312AStyrene in Latex Styrene-Butadiene Rubber by Gas Chromatography
Method 312BStyrene in Latex Styrene-Butadiene Rubber by Capillary Gas Chromatography
Method 312CStyrene in Latex Styrene-Butadiene Rubber Produced by Emulsion Polymerization
Method 313AResidual Hydrocarbon in Rubber Crumb
Method 313BResidual Hydrocarbon in Solution Polymers by Capillary Gas Chromatography
Method 315Particulate and Methylene Chloride Extractable Matter from Aluminum Production Facilities
Method 316Sample and Analysis for Formaldehyde Emissions in the Mineral Wool and Wool Fiberglass Industries
Method 318Extractive FTIR Method for Measurement of Emissions from the Mineral Wool and Wool Fiberglass Industries
Method 320Vapor Phase Organic and Inorganic Emissions by Extractive FTIR
Method 321Gaseous Hydrogen Chloride Emissions at Portland Cement Kilns by FTIR
Method 323Formaldehyde Measurement Using Derivatization
Method 325AVolatile Organic Compounds from Fugitive and Area Sources: Sampler Deployment and VOC Sample Collection
Method 325BVolatile Organic Compounds from Fugitive and Area Sources: Sampler Preparation and Analysis
Method 326Determination of Isocyanates in Stationary Source Emissions
Method 327Fugitive and Area Source Measurement of Selected Volatile Organic Hazardous Air Pollutants Using Specially Prepared Canisters

Air Emission Measurement Center (EMC)

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Contact Us About Air Emission Measurements to ask a question, provide feedback, or report a problem.
Last updated on July 21, 2025
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