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Method 202 System

Method 202 System

Method 202 is an isokinetic sampling method used to measure Condensable Particulate Matter (CPM) from stationary source emissions.

Methods 5, 17, and 201A are relevant to performing Method 202. To meet the requirements of the filterable PM test method used in conjunction with Method 202, you must maintain isokinetic sampling conditions. In addition, you must sample at the required number of sampling points, which are specified in Method 5 of appendix A-3 to part 60, Method 17 of appendix A-6 to part 60, or Method 201A of appendix M to this part.

The CPM is collected in dry impingers after filterable PM has been collected on a filter maintained as specified in either Method 5, Method 17, or Method 201A of the appendices listed above.

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Description

Combination Method 201A (PM2.5)/202 System
Combination Method 201A (PM2.5)/202 System

 

The CPM is collected in dry impingers, then the impinger contents are purged with nitrogen (N2) immediately after sample collection to remove dissolved sulfur dioxide (SO2) gases from the impinger. Next, the organic and aqueous fractions are dried before the residues are weighed. The total of the aqueous and organic fractions represents the CPM.

 

Preferred Solution: Vertical Compact Condenser

Apex Instruments offers a Method 202 system featuring a vertical compact condenser (GNM-VCC).

Features:
• More compact design
• Port for measuring filter exit temperature
• Can also be used for OTM-45 (PFAS) and Method 23 (Dioxins and Furans)

 

 

 

 

 

Alternate Method 202 condenser options include the vertical coiled condenser (GN-VCHM-M202) for high moisture sources (above 15%), and the vertical Allihn condenser (GN-VC-M202A) for low-percent moisture sources. These condensers are used with the short knockout impinger (GN-9AKS) and purge stem (GN-9AKS-PS).

 

Method 202 Sampling Accessories

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PTFE Filter Membranes are produced of pure PTFE resins. They withstand…
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GN-9AKL
New style glass knock-out impinger for use with vertical compact…
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GN-9AKS
Knock-out impinger assembly, short unground (for horizontal MM5)
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GN-9AKS-PS
Purge Stem for GN-9AKS (SPARE RECOMMENDED)
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Liebig vertical condenser, #28 socket and # 28 ball, water…
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Vertical (Allihn) Condenser for low-percent moisture sources
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GN-VCHM-M202
Water-jacketed coil (Graham) condenser for Method 202, #28 socket both…
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3-inch filter assembly, unground glass with 90 degree inlet and…
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Insulation blanket for GNFA-3U-18K assembly
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Compact vertical condenser, #28 socket both ends, water jacket with…
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Compact vertical condenser with port for heater, ideal for cold…
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Cartridge heater for Method 202 Cold-Weather Applications
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Submersible coolant pump, 120 V, 120 gallons per watt/hour at…
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Submersible coolant pump, miniature, 115 V. Ideal for continuous circulation…
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Apex Instruments impinger cases are constructed from thick aluminum to…
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Apex Instruments modular sample case assemblies are versatile, lightweight, and…
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Insulated blanket for SFA-82H and SFA-82H-V.
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Method 202 Cold Weather Sampling Accessories

Apex Instruments offers accessories to make cold weather sampling easier and more precise by ensuring that samples are maintained at the correct temperature.

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Insulation blanket for GNFA-3U-18K assembly
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Compact vertical condenser with port for heater, ideal for cold…
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Insulated blanket for SFA-82H and SFA-82H-V.
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Cartridge heater for Method 202 Cold-Weather Applications
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SBR-XR2C Riser with Built-in Temperature Controller
A riser is required for attaching the impinger case to…
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Method 202 Purge Accessories

Purge Regulatory Assembly

Regulate argon, carbon dioxide, and nitrogen gases up to 25 liters per minute.  Brass-bodied regulator features 0 – 250 psi pressure gauge, 0 – 25 LPM flow meter, horizontal fitting for gas source and vertical fitting to attach filter, TPFA line, elbow socket and purge stem.

REG-NPA-202 Purge Regulatory Assembly

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4MSEL4N-PFA
PFA elbow connector - 1/4-inch tube fitting to 1/4-inch MNPT
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60u inline brass filter, 1/4-inch tube union
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GA-28S4NTG
Glass-filled PTFE adapter, #28 socket to 1/4-inch FNPT
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GN-9AKS-PS
Purge Stem for GN-9AKS (SPARE RECOMMENDED)
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Argon, CO2, nitrogen flow meter regulator, CGA-580, 0-400 PSI
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Tubing, PFA, 1/8-inch inner diameter by 1/4-inch outer diameter, 0…
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