I have a 1/2 bottle of Pactra Flat Clear that has been sitting around for about 25 years. It is a dark amber color and after all those years, the flattening agent did not settle. I use it sparingly for uniforms and other stuff that should have absolutely no sheen of any level. It works better than any flat Testor's paint on the market today. I recently bought a bottle each of both Testor's Dullcoat Lacquer in a
1-3/4 oz square bottle and Testor's Model Master Flat Clear Lacquer Finish in a 1 oz round bottle. Neither of which produce really flat finishes, but more of what they call in the house painting world, an eggshell finish. Sitting them aside, I noticed that after a few days the flattening pigment settled to the bottom of the bottles. The Dullcoat lacquer had about a 1/2 inch of clear lacquer at the top, and the Model Master lacquer had about a 1/4" clear lacquer at the top. As an experiment, I siphoned off the 1/2" of clear lacquer from the Dullcoat bottle, saving it in a capped jar, and then shook the remainder up. I used it on a uniform and found it to be as flat as the old Pactra Flat lacquer.