The paper shall contain not less than 2 pct calcium carbonate. Any deviation in this requirement shall be sufficient cause for rejection of the paper. A tolerance of 5 pct shall be allowed. Samples from the delivery shall show no greater resistance than the standard sample to removal by abrasion of typewritten characters. For colored stock, paper shall match one of the established standards.
Standards are blue, buff, green, pink, salmon, or yellow.
Stock shall not be 2-sided. Color coordinates for selected standards are included in Part 3. Shall be uniform. The dirt count for each side of the paper shall not exceed 250 specks per square meter. Shall match the Government's standard sample for color.