Preservation

Density

  • Control strips are created on a sensitometer for each new processing batch and evaluated on the densitometer. Adjustments are made to the processing chemicals as needed to achieve the desired neutral visual density reading of “1” on the control strip.

Top of Page

Preservation >

The U.S. National Archives and Records Administration
1-86-NARA-NARA or 1-866-272-6272

.