Scanned the complete document including blank pages, reverse side of pages, front and back matter, hard covers, spine, etc.

Scanned the entire page with edges (a uniform border should be visible around entire page - use black background paper)

Check resolution is at 400 ppi

Scanned at 24 bit depth 

Validate that all pages are turned to their proper orientation

Scanned dimensions closely match actual size of the original and consistent size across pages in object

Ensure that no cropping of page text has occurred 

Visually check that no distortion or blemishes obscure the legibility due to photo processing (i.e. that a blemish is not part of the original text and or any glare from protective covering is minimized)

Confirm page sequence matches original and filenames have been properly applied (eg wrcXXXXX_XXX)

Perform visual comparison of digitized images with original document, checking for any missing or mislabeled pages 

Open a random page from each object in Photoshop, and visually confirm overall tone and color matches original. That image is in focus by viewing image at a resolution view of 50-100%

Note on color management - use AdobeRGB1998 color profile ( since using flat bed scanner and monitor calibration may not be feasible recommend using a standard icc to maintain consistent color throughout images )