The power supply to BSI’s office in London will be shut down for planned maintenance from 16:00 (GMT) on Friday 30 January until 19:00 (GMT) Sunday 1 February 2015. This website will be unaffected, but the telephone numbers at this location will not respond. In the meantime, please email tech.support@bsigroup.com and the team will be on hand to assist you from 09:00 (GMT) on Monday 2 February. We apologise for any inconvenience caused.

Download PAS 2050:2011 Specification for the assessment of the life cycle greenhouse gas emissions of goods and services

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