A-A-1821 1982 Edition, February 23, 1982
CLEANING COMPOUND,MASONRY SURFACES
Includes all amendments and changes through Cancellation Notice 1, January 20, 1998
Additional Comments: CNCL NO S/S
The General Services Administration has authorized the use of this commercial item description.
This description covers 5 classes of controlled release acidic compounds for cleaning dirt and grime from masonry surfaces with minimum damage to the surface.