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Method 7 Nitrogen Oxides Sampling Equipment
 Apex
Instruments offers two different options for sampling for
nitrogen oxide emissions. For Methods 7, 7A and 7B a grab
sample is collected in an evacuated 2 liter flask containing
a dilute solution of sulfuric acid and hydrogen peroxide.
Method 7 normally requires the collection of multiple samples
at 15 minute intervals. The appropriate method specifies
the analytical procedure. Sampling kits include multiple
flask, sample caddy, probe assembly, valve and squeeze bulb
assembly, evacuation pump, pressure sensor and transport
case.
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CK-7A9-V
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Method 7 Source Sampling Kit includes:
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| Qty |
Part # |
Description |
| 1 |
SB-7 |
Method 7 Sample Frame Assy,
w/ Probe Clamp |
| 9 |
G7-VFN |
Method 7 Insulated Flask Assy,
w/ Valve & Thermowell |
| 1 |
SB-7VA |
Method 7 Valve Pump Assembly |
| 1 |
A-350 |
Aspirator Pump Squeeze Bulb |
| 1 |
E7-MAA-V |
Method 7 Pump Assembly |
| 1 |
D477-5 |
Method 7 Digital Handheld Manometer |
| 1 |
ITS-1M-V |
Infinite Temperature Controller |
| 1 |
MPS-36H-V |
36 inch Heated Probe Sheath,
240V |
| 3 |
MPL-36G2 |
36 inch Pyrex Liner (8mm) with
Glass Cup (No Ball int) |
| 3 |
MGS-12B |
Glass Adapter #15 Threads to
12/5 Ball |
| 3 |
GA-15B |
Bored Screw Cap, #15 Threads |
| 3 |
GA-15/6S |
Silicone Seal for 1/4 inch Tubing,
#15 Theads, 6mmHole Dia. |
| 15 |
TP-4/2 |
1/4" Poly Tubing (per foot) |
| 3 |
BS12 |
Stainless Steel 12/5 Ball Joint
Clamp |
| 1 |
GA-12S4 |
Stainless Steel 12/5 Socket
to 1/4 Tube Union Adapter |
| 1 |
TC-7A9 |
Method 7 Transport Case |
Methods 7C and 7D
For Methods 7C and 7D an integrated
sample is passed through a series of full size orifice impingers
containing an alkaline-potassium permanganate solution. The
sample rate is between 400 and 500cc per minute, normally
three one hour samples are collected per test. The Model 623
is the console of choice, however, we do offer a low
flow orifice adapter (VUA-575) for converting the
Method 5 source sampler consoles for low flow sampling. The
Method 7C sample is analyzed colorimetrically and for Method
7D by ion chromatography. Please inquire for additional details.
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