Full Description

ISO 16258-1:2015 specifies the analysis of respirable crystalline silica (RCS) in samples of aircollected on 25 mm-filters by X-ray diffraction, when using an analytical approach where the dust onthe air sample filter is directly analysed by the instrument. This part of ISO 16258 includes informationon the instrumental parameters, sensitivity of different sampling apparatus, uses of different filtersand correction for absorption effects. In this part of ISO 16258, the expression RCS includes the mostcommon polymorphs quartz and cristobalite. The less common polymorphs of crystalline silica, suchas tridymite, are not included within the scope of this part of ISO 16258 because a standard referencematerial is not available. Under certain circumstances (i.e. low filter dust loads, low silica content), theanalytical approach described in this method may not fulfil the expanded uncertainty requirements ofEN 482. Guidance for calculation of uncertainty for measurements of RCS is given in ISO 24095.

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Published: 09/15/2015 Number of Pages: 34 File Size: 1 file , 770 KB Same As: BS ISO 16258-1:2015