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Document Designation and Title Year Select Item(s) D6561 Standard Test Method for Determination of Aerosol Monomeric and Oligomeric Hexamethylene Diisocyanate (HDl) in Air with (Methoxy-2-phenyl-1) Piperazine (MOPIP) in the Workplace 06 D6561 Standard Test Method for Determination of Aerosol Monomeric and Oligomeric Hexamethylene Diisocyanate (HDl) in Air with (Methoxy-2-phenyl-1) Piperazine (MOPIP) in the Workplace 00