{"id":281482,"date":"2024-10-19T19:01:07","date_gmt":"2024-10-19T19:01:07","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-27422009\/"},"modified":"2024-10-25T15:40:03","modified_gmt":"2024-10-25T15:40:03","slug":"bs-27422009","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-27422009\/","title":{"rendered":"BS 2742:2009"},"content":{"rendered":"

This British Standard provides guidance on the use of BS Ringelmann charts to assess smoke emissions from unregulated processes. It is not suitable for calibrating Continuous Emissions Monitoring Systems. It is not applicable to processes whose emissions are regulated by EU Directives with stated Uncertainty.<\/p>\n

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NOTE Most regulated processes have particulate emissions limits below Ringelmann 1.<\/p>\n<\/blockquote>\n

This British Standard is intended for use with the related publications:<\/p>\n