| |
| |
 |
| |
|
- The Lab inspects your film for correct
density. Most documents we film require a density of .9 to 1.1 when measured with a visual densitometer.
- Every reel is inspected to ensure it has the ANSI specified resolution for its reduction ratio. Most of
our film is shot at a 20x reduction. The ANSI specification for 20x film is that 112 line pairs can be resolved
with a 100x loupe. Your film will always meet or exceed the ANSI standard for its reduction ratio.
- Master microfilm that has any flaw is rejected and the documents are refilmed at our cost.
- Each day our lab performs a residual thiosulfate test to ensure film has been rinsed to eliminate processing chemistry.
- We also test daily to ensure conversion of image silver to silver sulfide to ensure proper Brown Tone conversion.
|
| |
| Heritage uses only genuine microfilm and chemistry for all silver original
and duplicate rolls. We use the best, because our clients deserve the best. |
| |
|
|