Method 6: Determination of SO2 emissions from stationary sources

The ESC Method 6 Sampling Train is an efficient low flow, non-isokinetic system for extracting a gas sample from the stack and separating the sulfuric acid mist, including sulfur trioxide, from the sulfur dioxide fraction that is to be measured using barium-thorin titration. This train is outfitted with a miniature, pyrex lined, heated probe assembly, a midget sample caddy with insulated glassware tray, a midget glassware set, the impinger outlet adapter with thermocouple and the UC-25U umbilical cable with connector box.

UNI-VOS-110 Low Flow Control Console

The UNI-VOS-110 is the ideal Metering Control Console for accurate volume measurements in low flow gas sampling methods requiring sample rates from 0.5 to 2 liters per minute. The flow rate adjustments, gauges and temperature readouts on the console and the 0.01 Liter resolution of the dry gas meter allow the tester to maintain a constant and accurate flow rate while monitoring gas meter pressure and temperature and five remote temperatures. Two digital temperature controllers are provided for maintaining probe and filter heat. Alternatively the C-5000 Isokinetic Control Console can be used with an appropriately sized CO-FA style Orifice Flow Adapter.

GSM-6B Method 6 Midget Glassware Set:

Our standard GSM-6B Midget Glassware Set is precision ground ball and socket joint with O-ring for leak-free performance. The stem-to-bottle taper joint is also a precision ground joint with O-ring seal.

(1) GP-606 3Way Pyrex Valve
(4) GP-607 Midget Impinger
(1) GP-608 Orifice Impinger
(4) GP-609 Midget U-Tube
(12) GP-611 SS Pinch Clamp

Method 7: Determination of nitrogen oxide emissions from stationary sources

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 8: Determination of sulfuric acid mist and sulfur dioxide emissions from stationary sources

Method 8 utilizes an isokinetic sampling system where the filter is unheated and placed between the first and second impinger of a glassware set that alternates orifice and straight stem impingers. We provide three accessories for the performance of Method 8 to replace the standard filter and heated filter box in the Method 5 sampling train.