Method 7C and 7D
Method 7C and 7D
Method 7C (Colorimetric) and 7D (Ion Chromatography) are used for the determination of nitrogen oxide emissions.
A sample is passed through a series of specially built impinger that contains an alkaline potassium permanganate solution. The impingers are of standard height with a narrow bottle, which improves the collection efficiency. The sample rate is between 400 and 500 cubic centimeters per minute. Normally, three one-hour samples are collected for the test.
The XC-623 is the recommended console for this application. The sample is analyzed colorimetrically for Method 7C and by ion chromatographically for Method 7D.
Product Documents
Description
The XC-623 is the recommended console for this application. The sample is analyzed colorimetrically for Method 7C and by ion chromatography for Method 7D. 220 VAC option is available.
To adapt the VU umbilical we offer a #28 socket with a ¼ union for the sample line and ¼” union for the TCA. Please inquire for additional details.
| Part Number | Description |
|---|---|
| PC10-3G | 3-foot CEM probe assembly, 5/8-inch glass liner, 110 VAC |
| PLN-3G | 3-foot glass probe liner, 5/8-inch OD with unground #28 grooved ball |
| GN-8 | Double L adapter, #28 unground sockets |
| GN-11 | U-tube, #28 unground sockets |
| GN-9AO-M7 | Impinger assembly, stem with orifice, 250 mL, unground O-ring joints |
| GN-9A | Impinger assembly, plain stem, 500 mL, unground O-ring joints, modified Greenburg-Smith |
| GA-100 | Umbilical adapter (gooseneck), #28 socket with thermocouple, mounting bracket, 1/2-inch male quick connects |
| SB-3 | Impinger box/insulated coolant reservoir model 100, holds 4 impingers |
| SB-8 | Modular sample frame with probe clamp and impinger box slides |
Product | Description | |||
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3-foot probe liner, borosilicate glass, with #28 grooved ball |
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Double "L" adapter, #28 unground sockets |
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U-tube, #28 unground sockets |
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Impinger assembly, plain stem, 500 mL, unground O-ring Joints, modified… |
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Impinger assembly, Method 7, stem with orifice, 250 mL, unground… |
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Apex Instruments modular sample case assemblies are versatile, lightweight, and… |
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Sample case adapter/umbilical (gooseneck) adapter with 1/2-inch stainless steel male… |
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Apex Instruments impinger cases are constructed from thick aluminum to… |
