lntertek maintains accreditation for ASTM E84 at four laboratories under our Building & Construction business line in North America and Asia. In an effort to better understand variability of SDI results among our four laboratories and between our labs and other accredited labs, lntertek initiated an internal review of our equipment, procedures, and calibration results as well as the ASTM E84 standard itself. This white paper will briefly discuss some observations resulting from this review. Please complete the form below to download the white paper.