This is an incredibly shocking story...if you live in the UK, please read. http://www.theguardian.com/environment/2013/aug/22/air-pollution-monitoring-stations-shut Save on material and labor costs by switching to the low maintenance BAM 1020 instead of ceasing PM monitoring. Enviro Technology, Inc. in Stroud offers trade-in pricing for old, inefficient, outdated equipment. Contact Mr. Mike Webley.
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