JCP L24 Vellum-bristol Cover, White and Colored February 1, 2008 

Cover Paper FSC 9310 

 

Use Information: This paragraph is informational only and is not exclusively definitive of the end use. 

For high quality multicolor face and back offset printing of brochures, programs, covers for books, periodicals, etc. Printed 
matter may include text, line illustrations, and halftones up to 150-line screen and solid reverses. 

 

Stock: Ground wood pulp, not to exceed 1% 

Note: Not less than 30% postconsumer fiber. Any percent 
over 30 percentage points, is encouraged, provided that 
the requirements of this Standard are met. 

 

Basis weight: 22-1/2 by 28-1/2 inches, 
500 sheets (pounds) ………..… 

 

57 

 

 67 

 

80 

A tolerance of +5% shall be allowed. 

 

 

 

 

Bursting strength: Average not less 
than (lb/in2) ………………………….. 

 

 

 

28 

 

 

 

32 

 

 

40 

Tearing strength: Average each 
direction not less than (grams) …..….. 

 

90 

 

 

110 

 

135 

Opacity: Average not less than 

(percent) …………….……………..… 

 

93 

 

94 

 

95 

No individual specimen shall average 
less than (percent) …… 

 

91 

 

92 

 

93 



General appearance: Paper shall conform to the standard 
sample(s) established by the Government. 

Brightness: The white paper shall have a target brightness 
of 83% or as specified. 

 

Color: The paper in the order (or publication) shall be 
uniform and the color variation shall not exceed 
DE(CIELAB) = 1.0 . For colored stock, paper shall match 
one of the established color standards in Part 3 or match a 
color sample supplied by the ordering agency. Colors 
shall not fade or transfer (rub off) and shall appear even 
and uniform on the surface of the sheet. The sheet shall 
not be 2-sided. 

Finish and formation: Shall be uniform. 

 

Cleanliness: The dirt count for each side of the paper shall 
not exceed 650 specks per square meter. No sample sheet 
(600 to 650 cm2 in size) shall contain more than one defect 
with equivalent area of 0.25 mm2 or greater

 

OPTION 

 

Alkaline paper. This option is for products requiring above average permanence. Add / replace the following properties.

 

Stock: 100% bleached chemical wood pulp. 

Note: Not less than 30% postconsumer fiber. Any percent 
over 30 percentage points, 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% calcium 
carbonate. 

Note: Any deviation in this requirement is sufficient cause 
for rejection of the paper. 

 

 

 

Testing: Shall be conducted in accordance with methods in part 2, Government Paper Specification Standards. The 
acceptance criteria Part 4 shall apply.