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or increase the total emissions for the railway environment beyond the limits defined in the appropriate standard
nor to its characteristics (speeds
bituminous coal or hard coal
but higher concentrations may be determined by suitable dilution of the sample
Paper and board. Accelerated ageing - Exposure to atmospheric pollution (nitrogen dioxide) not-for-sale or increase the total emissions1 Scope This part of ISO 5630 specifies a method for accelerating the ageing of printing and writing papers through exposure to nitrogen dioxide gas and assessing the effect on mechanical and optical properties for the purpose of predicting stability to long term natural ageing that occurs due to exposure to polluted air. It is applicable to all cellulose based printing and writing papers, including coated papers and filled papers.