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Pekar Flour Color Test
"Pekar Flour Color Test. A simple way for comparing the color of a flour (q.v.) sample with a standard sample. Also called the ""slick"" test, it involves placing a small sample of the test flour on a paddle or other flat surface so that one edge forms a straight line next to a similarly placed sample of a standard patent flour. Both samples are then slicked with an edge to form a smooth surface that exhibits a distinct line of demarcation between the two flours so that any difference in their color becomes evident."