| Defect |
Grade |
| I. |
II. |
| Exfoliation and breaking of a film |
No |
Up to 1% of the surface |
| Burnt film |
By the area of 4 cm2 and no more than 2 per m2 |
On condition of absence of the film damages |
| Trails from dead knots and splits |
Without damages on the film surface and uncompromised glue bond |
| Whitish stains and strips on a film |
Allowed |
| Low spot |
No |
By depth of max. 0,2 mm |
| Scratch |
Without damages on the film surface |
| Splitting on the edge |
No |
No more than 5 mm on condition that is covered by waterproof paint |
| Smudges of paint on a the surface |
max. within 5 mm from the edges |
| Sticking of extraneous film slices |
No |
Allowed |