USA EPA METHOD 7

Methods 7, 7A and 7B are variations of the non-isokinetic nitrogen oxide determination method that provide for three different analytical procedures of a grab sample that is collected in an evacuated 2 liter flask containing a dilute solution of sulfuric acid and hydrogen peroxide. Our M7-S1 Method 7 Sampling system consists of a heated, Pyrex lined probe assembly, a sample caddy, multiple evacuation flasks, a 3-way Pyrex valve, a hand purge pump, an evacuation pump, a 3-way pump selection valve, and digital manometer pressure sensor.

Methods 7C and 7D provide for nitrogen oxide determination by drawing a low flow sample through a heated, Pyrex lined probe assembly and an arrangement of three standard orifice impingers containing an alkaline-potassium- permanganate solution and a dryer impinger. The UNI-VOS-110 is the ideal control console to complete the system.

	METHOD 7 Determination of Nitrogen Oxide Emissions from Stationary Sources
M7-S1	Method 7 Sample Caddy, Includes: Heated Pyrex Probe Assembly, Two Spare Pyrex Liners, Two Method 7 Pyrex Valve, 6 Encased Method 7 Flasks, Flask Thermocouple, Digital Manometer, Flow Control Valve Assembly, Dual Diaphragm Pump, Single Station Digital Temperature Controller, Connecting Tubing and Adapters.
PRA-P3S-3/8	3' Heated Miniature Probe Assembly, 3/8" Pyrex Liner
PRL-P3S-3/8	3' Pyrex Liner, 3/8", with Cup, 5/8"
GPA-B12-6GL	Ball Adapter with 3/8" GL Fitting
PRM-3S	3' Miniature Probe Liner Heating Mantle
M6-SC	Method 6/7/26 Sample Caddy with Probe Support Bracket
GP-701	Method 7 3-Way Valve for Flask, #12/5 Socket Inlet, #12/5 Ball Outlet
GP-702	Method 7 Flask, Encased
PM:SKNU-14	Thermocouple Elbow with Large Plug for M7 Flask
PPM-477-5	Digital Manometer, 0-30 psid
M7-VALVE	Method 7 Flow Control Valve Assembly
P-2107	Dual Diaphragm Pump, Method 7
M5-DC-1	Single Station Digital Temperature Controller