The URG Dual Sequential Fine Particle Sampler collects aerosols, semi-volatile organic compounds and mass in pre-set time sequences. It can be programmed to collect up to four pairs of samples in parallel for comparison and quality assurance. The system can be left unattended for up to four days making it ideal for remote areas.
The URG Versatile Air Pollutant Sampler (VAPS) allows for the simultaneous measurement of a variety of air quality parameters. The virtual impactor used in the VAPS is a modification of the virtual impactor system approved by the USEPA for compliance monitoring of PM-10. The VAPS virtual impactor operates at 32Lpm. The coarse particles travel straight through the center channel and are collected on a filter. The fine particles travel through the left and right channels. Annular denuders on the left channel collect any reactive acidic and basic gases. A polyurethane foam sampler (PUF) on the right channel collects higher molecular weight organic vapors.
The URG-3000N is designed to sample for organic and elemental carbon found in ambient PM-2.5. The measurement of ambient carbon species is an important part of the United States National PM-2.5µm Chemical Speciation Network (CSN).
The URG-3000N has been designed for the USEPA to achieve comparable data with the carbon measurements of the Interagency Monitoring of Protected Visual Environments (IMPROVE) PM-2.5 carbon module.
The URG Medium Volume Particulate Sampler allows for simultaneous measurements of a variety of air quality parameters. This sampler collects four PM-2.5 and four PM-10 samples simultaneously and the flow on all eight channels is controlled by critical orifices. The enclosure is designed to accommodate additional sampling components such as annular denuders and PUF samplers, making it ideal for many sampling scenarios.
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