UME^X 200 Passive Sampler
For Sulfur Dioxide and Nitrogen Dioxide

Accurate, reliable personal sampling
Ready to use
Lightweight sampler clips easily in the breathing zone
Economical

No pump or training required
Low-cost single-use sampler
Sample medium and blank/correction in one unit

Safe — no glass or chemical liquids in the sampler
Accurately measures personal workplace exposure to sulfur dioxide and/or nitrogen dioxide

3-week sample storage at ambient temperature

UME^X 200 Product Data Bulletin (PDF)

UME^X 200 Performance Profile (PDF)

UME^X 200 Sulfur Dioxide Research Report (PDF)

UME^X 200 Nitrogen Dioxide Research Report (PDF)

UME^X 200 Operating Instructions (PDF)

List of Laboratories for Analyzing 500-200 Series UME^X Passive Samplers

The single-use SKC UME^X 200 Passive Sampler effectively collects sulfur dioxide (SO₂) at a sampling rate of 15.1 ml/min and/or nitrogen dioxide (NO₂) at 12.83 ml/min. The sample medium (tape treated with triethanolamine [TEA]) and a "blank/correction" section of tape are contained in one sampler saving time and money. The lightweight UME^X 200 clips in the breathing zone for easy personal sampling. Samplers are provided in individual aluminized pouches that can be used to transport the sampler to a laboratory. The label on the outside of each pouch contains the shelf-life date for easy inventory management.

Using the UME^X 200 Passive Sampler
Sampling with the UME^X 200 Passive Sampler for sulfur dioxide and/or nitrogen dioxide is easy and requires no pump or training. Simply remove the sampler from the pouch, record sampling information, and slide the cover to the "on" or sampling position. Clip the sampler on a worker for personal sampling up to eight hours. When sampling is complete, slide the cover to the "off" position, place the sampler back in the pouch immediately, and seal. Send the sampler to an accredited laboratory for analysis by solvent extraction ion chromatography (IC) with conductivity detection.

Performance Profile

Sampling Rate	SO₂: 15.1 ml/min with a relative standard deviation of 16.7% NO₂: 12.83 ml/min with a relative standard deviation of 13.4%
Validated Concentration Range for SO₂ and/or NO₂	0.4 to 8 ppm
Analysis Method for SO₂ and/or NO₂	Solvent extraction and ion chromatography with conductivity detection
Lower Detection Limits for SO₂ and/or NO₂	15 minutes: 2 ppm 8 hours: 0.1 ppm
Shelf-life	18 months from date of manufacture at ambient temperature
Storage	Before use: Ambient temperature After use: Analyze within 3 weeks. Can be stored at ambient temperature or at < 39.2 F (4 C)
Accuracy for SO₂ and/or NO₂	± 30%
Temperature Effects	No effect on sampling rate between 20 and 25 C
Humidity Effects	No effect from 20 to 80% relative humidity
Wind Effects	No effect from 0.05 to 1.0 m/s
Interferences	None identified
Dimensions	3.4 x 1.1 x 0.35 in (8.6 x 2.8 x 0.89 cm)
Weight	0.38 oz (10.9 gm)
Slide Cover	Yellow

Potential Sources of Workplace Exposure to Sulfur Dioxide and Nitrogen Dioxide

Sulfur dioxide is used in industry as a(n):

Intermediate in sulfuric acid manufacture
Bleaching agent
Disinfectant
Fumigant
Solvent
Refrigerant
Food preservative
Reagent in the manufacture of magnesium, sodium sulfite, and other chemicals

Other sources are:

Copper smelting
Processing or burning coal or fuel oil
Paper manufacturing
Fertilizer manufacturing

Nitrogen Dioxide is used in:

Agricultural silos
Arc or gas welding, especially in confined space
Electroplating plants
Food and textile bleaching
Jewelry manufacturing
Nitric acid production
Nitrogen fertilizer production
Nitro-explosive production
Pickling plants

Source: OSHA Method ID-182

Other UME^X Passive Samplers Available
The same convenient and economical UME^X design is also available for sampling formaldehyde/other aldehydes (UME 100) and amines (UME^X 400).

Ordering Information

Description	Cat. No.
UME^X 200 Passive Sampler for Sulfur Dioxide and/or Nitrogen Dioxide, individually packaged in aluminized pouch, pk/10 UME^X samplers are designed for single use only. Do Not reuse UME^X samplers. Limited shelf-life. Do not store with food.	500-200