Determination of Moisture Content in Stack Gasses
EPA Method 4 is used to determine the moisture content of stack gases. A gas sample is extracted at a constant rate from the source. Moisture is then removed from the sample stream and the condensate is measured either by volume or by mass. While Method 4 can be run independently, it is often conducted with a pollutant emission measurement run, such as Method 5.
For more information and documents about Method 4, please consult the EPA's Method 4 webpage.
Apex Instruments offers a Method 4 Sampling Kit. If interested in Method 4 sampling, Apex Instruments works with our customers to make sure we are providing the correct products for your project and will provide you with a price quote. For any questions about our sampling kit, please contact sales@apexinst.com.
Equipment Needed for Method 4:
● Probe
○ M5 style
○ Stainless steel tubing
● Gas extracting pump
○ Console
○ Tedlar bag pump
● Sample line
○ M5 or M4 style, or Teflon tubing
● Impingers
○ M5 or M4 style impinger train setup
● Pre-filter optional
● Dry bulb, wet bulb