View Historical Standards for D2157:

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Document Designation and Title Year Select Item(s) D2157 Standard Test Method for Effect of Air Supply on Smoke Density in Flue Gases From Burning Distillate Fuels 94(2003) D2157 Standard Test Method for Effect of Air Supply on Smoke Density in Flue Gases From Burning Distillate Fuels 94(1999)