• Free media blank included
  
  
• Validation range extended below new TLV-TWA for NO₂
  
  
• Same chemistry as active OSHA Method ID-182
• Accurate, reliable occupational 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 in one unit
  
  
• Safe — no glass or chemical liquids in the sampler
  
  
• Validated sampling occupational exposure to sulfur dioxide and/or nitrogen dioxide from 15 minutes to 24 hours
  
  
• 3-week sample storage at ambient temperature
  

 

 

 

 

Performance Profile

Sampling Rate	SO2: 15.2 ml/min with a relative standard deviation of 16.5% NO2: 17.3 ml/min with a relative standard deviation of 11.4%
Validated Concentration Range	SO2: 0.4 to 8 ppm NO2: 0.051 to 8.5 ppm
Analysis Method	Solvent extraction and ion chromatography with conductivity detection
Lower Detection Limits	SO2:   15 min: 1.8 ppm                 8 hrs: 52 ppb               24 hrs: 17.4 ppb NO2: 15 min: 0.2 ppm                8 hrs: 6.3 ppb              24 hrs: 2 ppb
Shelf-life	18 mos from date of manufacture at ambient temperature
Storage	Before use: Ambient temperature After use: Ambient temperature or at < 39.2 F (4 C) and analyze within 3 weeks
Accuracy	SO2: ± 30% NO2: ± 27%
Temperature Effects	SO2: No effect on sampling rate from 20 to 25 C NO2: No effect on sampling rate from 22 to 40 C
Humidity Effects	No effect from 20 to 80% relative humidity (RH)
Wind Velocity Velocity Effects	No effect from 5 to 100 cm/sec
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

 

 

 

 

The single-use SKC UME^x 200 Passive Sampler effectively collects sulfur dioxide (SO₂) at a sampling rate of 15.2 ml/min and/or nitrogen dioxide (NO₂) at 17.3 ml/min. The sample medium (tape treated with triethanolamine [TEA]) and a "blank" section of tape are contained in one sampler saving time and money. The lightweight UME^x 200 clips in the breathing zone for easy occupational 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 occupational 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.

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
• Manufacturing paper and fertilizers

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^x 100) and amines (UME^x 400).

 

 

 

 

UME^x 200 Product Data Bulletin (PDF)

UME^x 200 for Sulfur Dioxide Operating Instructions (PDF)

UME^x 200 for Nitrogen Dioxide Operating Instructions (PDF)

Full Validation of UME^x 200 Samplers for Nitrogen Dioxide (PDF)

Partial Validation of UME^x 200 Samplers for Sulfur Dioxide (PDF)

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