FSC 9310 JCP A61 NO. 1 OFFSET BOOK, SMOOTH-FINISH Printing Paper February 1, 1999 ------------------------------------------------------------------------ Use information: This paragraph is informational only and is not exclusively definitive of the end use. For highest quality face and back offset printing of books, pamphlets, folders etc. Low bulk. Printed matter may include text, line illustrations, halftones up to 150-line screen, and solid reverses. Unless the option below is specified, the following `basic' specification applies. Stock: 100 pct chemical pulp. Note: \1\ Not less than 30 pct postconsumer fiber. Any percent over 30 percentage points, is encouraged, provided that the requirements of this Standard are met. Grammage (g/m\2\)......................... 75 90 105 Basis weight: 25 by 38 inches, 500 50 60 70 sheets (pounds)........................ A tolerance of 5 pct shall be allowed. Bursting strength: Average, not........... less than (mN).......................... 140 170 200 Equivalent (lb/in\2\)................... 21 25 29 Opacity: Average, not less than (per- 92 93 94 cent).................................... No individual specimen shall average 90 91 93 less than (percent).................... Thickness: Average (mm)................... 0.090 0.105 0.125 Equivalent (inch)....................... 0.0035 0.0041 0.0049 A tolerance of 0.008 mm (0.0003 inch) shall be allowed. Paper shall be uniform and shall not vary more than 0.011 mm (0.0004 inch) from one edge to the other. Smoothness: Average, each side, not to exceed (units)................................................ 140 140 140 General appearance: Paper shall conform to the standard sample(s) adopted by the Government. Color: The paper in the order (or publication) shall be uniform with a brightness not less than 83 pct. The color variation shall not exceed DE(CIELAB)=1.0. Finish and formation: Shall be uniform with a smooth-finish. Cleanliness: The dirt count for each side of the paper shall not exceed 250 specks per square meter. No sample sheet (600 to 650 cm\2\ in size) shall contain more than one defect with an equivalent area of 0.25 mm\2\ or greater. Sampling and testing: Shall be conducted in accordance with standards in Part 2, Government Paper Specification Standards. The precision requirements of the acceptance criteria (Part 4) shall apply for all properties except for opacity, thickness, smoothness, and brightness. Any deviation in the ``excepted'' properties is a critical defect and shall be sufficient cause for rejection of the paper. OPTION Option A: Alkaline paper. This option is for products requiring above average permanence. The following requirements replace the same in the `basic' specification and are added to the specification. Stock: 100 pct bleached chemical woodpulp. Note: Postconsumer fiber, in any percentage, is encouraged, provided that the requirements of this Standard are met. Acidity: pH value by cold extraction shall be not less than 7.0. 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. ------------------------------------------------------------------------ Unless otherwise specified, the following is automatically waived when printing or duplicating is to be accomplished on commercial contract Sizing: Paper shall be surface- and internal-sized suitable for satisfactory printing on both sides of the paper on high-speed offset presses equipped with continuous flow or brush dampening systems. Pick resistance: Average, each side, not less than 13-A Dennison wax number. No individual specimen shall average less than 11-A Dennison wax number. Color: Shall match the Government's standard sample for color. A deviation of DE(CIELAB)=3.0 from the color standard is allowed. Curl: Paper shall lie flat with either no tendency to curl or with a curl which can be overcome under reasonable working conditions. Surface: Shall be free from lint, fuzz, or any particles which will pick, lift, fluff, or pile on the blanket under normal press conditions. Size and trim: Sheets: Paper shall be furnished in the size(s) ordered and shall be flat, trimmed square on four sides with clean smooth edges, and evenly jogged. A tolerance of 2 mm (\1/16\ inch) shall be allowed except for sheets 216 by 356 mm (8\1/2\ by 14 inches) or less; then a tolerance of 1 mm (\1/32\ inch) shall be allowed. Successive sheets within any package shall not differ from each other by more than 0.5 mm (\1/64\ inch). Paper with the long dimension 813 mm (32 inches) or less shall be considered square if the variation does not exceed 1 mm (\1/32\ inch); over 813 mm (32 inches); 2 mm (\1/16\ inch). Grain: Direction of the grain on flat paper shall be as ordered. Pressroom conditions: The bulk of this paper will be used in air- conditioned pressrooms maintained at 24 deg.C 2 deg.C and 45 pct 8 pct relative humidity. --------------------------------------------------------------------------- \1\ This requirement may be waived by the ordering agency when purchasing less than a mill run quantity and so stated in the procurement document.