Gas Analysis Equipment
Gas sampling or constant velocity sampling requires an understanding of Methods 1 through 3, these are basic methods of collecting a sample. Apex offers source sampling solutions to complete your testing needs. The XC-60 Source Sampler is designed to extract and trap the samples needed to test for harmful gases. After the sample is collected there are many types of analysis depending on the compound(s) of interest. 

Method 3 - Gas Analysis for the Determination of Dry Molecular Weight
Method 3B - Gas Analysis for the Determination of Emission Rate Correction Factor or Excess Air
Method 4 - Determination of Moisture in Stack Gases
Method 7 - Determination of Nitrogen Oxide - Emissions from Stationary Sources
Method 18 - Integrated Bag Sampling for Organic Compounds
Method 0030 - Volatile Organic Compounds (VOST)
Method 0031 - Volatile Organic Compounds (SMVOC or SuperVOST)
Method 0040 - Principle Organic Hazardous Constituents (POHCs) using Tedlar® Bags
Method 0051 - Hydrogen Chlorine and Chlorine

IRM Instrumental Reference Methods and Equipment
The US EPA specifies IRM Reference Methods are used to substantiate the accuracy and precision of the CEMS. A Continuous Emission Monitoring System (CEMS) is the equipment that is used for the determination of a gas or particulate matter concentration or emission rate using pollutant analyzer measurements, conversion equations, graphs, or computer programs to produce results in units of the applicable emission limitation or standard. CEMS are required under some of US EPA regulations for either continual compliance or when one is exceeding the standards.

Method 3A - Determination of oxygen and carbon dioxide concentrations in emissions from stationary sources
Method 3C - Determination of sulfur dioxide emissions from stationary sources
Method 7E - Determination of nitrogen oxide emissions from stationary sources
Method 10 - Determination of Carbon Monoxide Emissions from Stationary Sources
Method 25A - Determination of Total Gaseous Organic Concentration using a Flame Ionization Analyzer