Use non-respirable diameter fibers (>3μm diameter); Use bio-soluble fibers in lower temperature products Application performance; Continue to demonstrate no risk of fiber release from DPF in-use; Continue and expand VERT testing of bonded ceramic composite (article) to all GEO2-filter chemistries Occupational exposure; Maintain monitoring and good industrial hygiene practices with all materials; Refine engineering controls; Monitor manufacturing processes (random sampling).
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