Sick GmbH
http://www.sick.de/english/

Environics Inc.
http://www.environics.com/

Monitor Europe
http://www.monitoreurope.com/

NEO Monitors AS
http://www.neomonitors.com

Rupprecht and Patashnick Co. Inc.
http://www.rpco.com/

Bm becker messtechnik
http://www.becker-messtechnik.de

Photovac
http://www.photovac.com/

EPM Environmental
www.epmenvironmental.com

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DETR
http://www.detr.gov.uk/

Department for Environment, Food and Rural Affairs
http://www.defra.gov.uk/

Environment Agency
http://www.environment-agency.gov.uk/

Environment Agency Wales
http://www.environment-agency.wales.gov.uk

Irish Environmental Protection Agency
http://www.epa.ie/

European Environment Agency
http://www.eea.eu.int/

Local Government Association
http://www.lga.gov.uk/

Scottish Environmental Protection Agency
http://www.sepa.org.uk/

Health & Safety Laboratory
http://www.hsl.gov.uk/

Met Office
http://www.meto.govt.uk/

Ordnance Survey
http://www.ordsvy.gov.uk

United Nations Environment Control
http://www.unep.ch/

Indoor Air Quality Association
http://iaqa.org/

Occupational Safety & Health Admin (USA)
http://www.osha.gov/

US Environmental Protection Agency
http://www.epa.gov/

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Source Testing Association
http://www.s-t-a.org/

Chartered Institute of Health
http://www.cieh.org.uk/

Air & Waste Management Association
http://www.awma.org/

Gambica
http://www.gambica.org.uk/

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