rs, Builders and Owners are rapidly coming to realize the great bene- fit and advantage possible in the use of - cold water paints for many purposes, but particularly as a sanitary measure. The powdery fineness of Ohio Hydrate Lime, plus its other chemical characteristics, make it peculiarly suited… … comprehend the powdery fineness of our Northwest Chemistry BIdg., Bureau of Standards, lime. 100'. of it will easily pass through Washington, D. C. a 30 mesh screen, while 9 7 '', of it will pass through a 200 mesh screen. When it is remembered that the latter means 40,000 openings to the square…