 |
Indicator |
 |
|
Standard |
|
|
Test Method |
| |
Paper weight (1 m2.), g |
|
|
80,0 ± 3,0 |
|
|
GOST 13199
ISO 536 |
|
| |
Whiteness, (CIE), %, not less:
- mark «COPY right»
- mark «GOZNAK copy» |
|
|
145
138 |
|
|
ISO 11475 |
|
| |
Roughness, ml/min, not more |
|
|
400 |
|
|
GOST 30115
ISO 8791-1 |
|
| |
Water absorption by surface under one-side watering (Cobb60), g/m2., not more |
|
|
35,0 |
|
|
GOST 12605
ISO 535
Goznak methods (express-method)
dated 20.03.2006
|
|
| |
Humidity, % |
|
|
5 ± 1 |
|
|
GOST 13525.19
ISO 287 |
|
| |
Opacity, %, not less, for paper with OOV |
|
|
90 |
|
|
GOST 8874
ISO 2471 |
Notes
- Indices of roughness, whiteness and water absorbency are detected from the upper side of the paper sheet.
- Paper delivery is made wire side up during paper making on cylinder mould paper machine.
- It is allowed to produce paper of all marks without surface sizing provided all qualitative indices.
It is allowed to produce paper with another paper weight and additional quality indices and their maximum deviation by producer and customer agreement.
