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![]() | The UMEx 200 Passive Sampler collects sulfur dioxide (SO2) at 15.2 ml/min and nitrogen dioxide (NO2) at 17.3 ml/min. The UMEx 200 contains a tape treated with triethanolamine (TEA) and “blank" to sample from 15 minutes to 24 hours. Analysis is performed by ion chromatography (IC) with conductivity detection. |
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% |
SO2: 0.4 to 8 ppm NO2: 0.051 to 8.5 ppm |
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Analysis Method | Solvent extraction and ion chromatography with conductivity detection |
Lower Detection Limits | SO2: 15 min: 1.8 ppm |
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 UMEx 200 Passive Sampler effectively collects
sulfur dioxide (SO2) at a sampling rate of
Potential Sources of Workplace Exposure to Sulfur Dioxide and Nitrogen Dioxide
Sulfur dioxide is used in industry as a(n):Nitrogen Dioxide is used in:
Source: OSHA Method ID-182
Other UMEx Passive Samplers Available
The same convenient and economical UMEx design
is also available for sampling formaldehyde/other aldehydes (
UMEx 200 Product Data Bulletin (PDF)
UMEx 200 for Sulfur Dioxide Operating Instructions (PDF)
UMEx 200 for Nitrogen Dioxide Operating Instructions (PDF)
Full Validation of UMEx 200 Samplers for Nitrogen Dioxide (PDF)
Partial Validation of UMEx 200 Samplers for Sulfur Dioxide (PDF)
List of
Laboratories for Analyzing 500-200 Series UMEx Passive Samplers