FSC 9310                                                         JCP K20
                      25% INDEX, WHITE AND COLORED
Index Paper                                             February 1, 1999

Use information: This paragraph is informational only and is not 
    exclusively definitive of the end use.
  For high quality face and back offset printing of card indexes, 
identification cards, office forms, notices, posters, covers, etc., 
requiring execution with pen and ink, erasing quality, and above average 
permanence. Printed matter may include text, line illustrations, 
halftones, and solid reverses.
Stock: Not less than 25 pct cotton or linen fibers; the remainder 
  bleached chemical woodpulp.

    Note: \1\ Postconsumer fiber, in any percentage, is encouraged, 
  provided that the requirements of this Standard are met.
Acidity: pH value shall average not less than 6.5 for white and 5.0 for 
  colored paper.
Rosin: Average, not to exceed 2.5 pct for papers having pH value less 
  than 6.5.

Grammage (g/m \2\)..................      165      200      255      305
  Basis weight: 25\1/2\ by 30\1/2\         90      110      140      170
   inches, 500 sheets (pounds)......
  A tolerance of 10 pct shall be allowed.

Bursting strength: Average,
  not less than (kPa)...............      270      450      580      690
  Equivalent (lb/in\2\).............       40       66       85      100

Thickness: Average (mm).............    0.190    0.230    0.290    0.350
  Equivalent (inch).................   0.0074   0.0091   0.0114   0.0138

    A tolerance of 0.013 mm (0.0005 inch) shall be allowed 
  for the 165, 200, 255 g/m\2\ paper and 0.020 mm (0.0008 
  inch) on the 305 g/m\2\. Paper shall be uniform and shall not vary 
  more than 0.011 mm (0.0004 inch) from one edge to the other.
Ruling and writing qualities: Lines ruled and characters written with 
  pen and ink shall be clear cut and free from excessive feathering.
Erasing quality: Paper shall retain good ruling, writing, and typing 
  quality, texture, and surface appearance, without ink spreading after 
  repeated erasures. Samples from the delivery shall show no greater 
  resistance than the standard sample to removal by abrasion of 
  typewritten characters.

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 
  target brightness of 80 pct for the white paper. The color variation 
  shall not exceed DE(CIELAB)=1.0.
    For colored stock, paper shall match one of the established 
  standards. Standards are blue, buff, green, pink, salmon, or yellow. 
  Colors shall not fade and shall appear even and uniform on the surface 
  of the sheet. Stock shall not be 2-sided. Color coordinates for 
  selected standards are included in Part 3.
  Finish and formation: Shall be uniform.
  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.


 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.

Color: Shall match the Government's standard sample for color. A 
  deviation of DE(CIELAB)=3.0 from the color standard for white and 2.0 
  for colored stocks is allowed. A color difference 1.0 DE unit between 
  felt and wire sides is permitted.

    For information only, the CIELAB values (Ill D65, 10 deg. observer) 
  of the color standard are


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 
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 grade is typically a low Government usage paper and 
currently not readily and/or economically available with postconsumer 
recovered fiber content. If a postconsumer recovered fiber content is 
desired in the paper, that number will be stated in the procurement 
document. Note, recovered material (cotton/linen) is not a postconsumer 
recovered fiber.