Uniphos Envirotronic Inc.

Uniphos PID Pre-filter Tube for Benzene Specific Measurements

Uniphos PID Pre-filter Tube for Benzene Specific Measurements

Benzene naturally occurs in crude oil and is used to make plastics, resins, synthetic fibers, dyes, detergents, additives and coatings, and pesticides. It is a widely used aromatic hydrocarbon which constitutes 1-2% of gasoline and other fuels.  While benzene is a very useful hydrocarbon that offers diverse applications, it is also a known human carcinogen.  Occupational Safety and Health Administration (OSHA) lists the PEL-TWA at 1 ppm, and the American Conference of Governmental Industrial Hygienists (ACGIH) have the TLV-TWA at 0.5 ppm.  Industry requires a means to measure low concentrations of benzene (typically below 1 ppm) in the presence of various hydrocarbons, often 100 to 1000X the concentration of benzene.

Uniphos Envirotronic Inc., a recognized leader in colorimetric detection tubes, has developed a PID pre-filter tube for selective determination of benzene in air containing a mixture of volatile organic compounds (e.g. toluene, xylene, ethyl benzene, octane, etc.). There are variants of the tube for use with PID instruments such as the Tiger Select by Ion Science and the UltraRAE 3000 by RAE Systems. The measuring range for benzene using the PID pre-filter tube by Uniphos is 50 ppb to 200 ppm.

At Uniphos, we are ready to help you find the right PID pre-filter tube or detector tube to suit your needs. Contact us today to learn more!

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