This diagram shows a typical surface cross section as it might appear, magnified many thousands of times, under an electron microscope. The surface might be that of a fiber, or of a painted wall, or even wall paper. In Line No. 1, rough soil...
Ludox colloidal silica, a product of DuPont research, is rapidly being adopted by the carpet industry as a soil retardant. It is easily applied at the mill by a multiple spray method, as shown here. Tiny, smooth particles of the Ludox fill up the...
This photograph demonstrates the exceedingly fine particle size of Ludox colloidal silica, a new product of the DuPont Company. This picture was taken with an electron microscope. The magnification is 25,000 diameters. This high magnification was...
Table of Contents: The company's tenth president; Bleaching by the mile; The metals industry and DuPont; Story previews; Steel...and your sewing machine; Bottles can be packages; U.S. 40 follows Buffalo Bill's trail; Revolution in the hen house; Rx...
This is a test strip of carpet, portions of which have been treated with Ludox collodial silica. After vacuuming, treated areas emerge clean, while untreated portions remain dirty and dingy.
Here is a sample of wall paper, half of which has been treated with 'Ludox' colloidal silica. The entire surface has been heavily soiled with ordinary house dirt sweepings, then wiped with a clean cloth. The treated half emerges fresh and clean,...
