There has always been a concern in the camera and optical industry that putting excessive liquid lens cleaning fluids directly on the lens surface may allow fluid to enter between lens elements.

The recommended procedure for using Type 1, Class 1 tissue is to put a few drops of fluid on a wad of tissue and proceed to clean the lens or optical surface.

Meets government specification #A-A-50177A for Type 1 Class 1

Specification #A-A-50177A replaces NNN-P-40; UU-P-313; Mil-P-13988

There has always been a concern in the camera and optical industry that putting excessive liquid lens cleaning fluids directly on the lens surface may allow fluid to enter between lens elements.

The recommended procedure for using Type 1, Class 1 tissue is to put a few drops of fluid on a wad of tissue and proceed to clean the lens or optical surface.

Meets government specification #A-A-50177A for Type 1 Class 1

Specification #A-A-50177A replaces NNN-P-40; UU-P-313; Mil-P-13988

Until recently it was available through a centralized Federal Government location. An acquisition reform has taken place, and now members of the Armed Forces are advised to purchase Type 1, Class 5 lens paper locally.

Type 1, Class 5 tissue paper is manufactured using different materials than other types of tissue. It looks and feels different. It is manufactured as a "wet use" tissue paper.

Meets government specification #A-A-50177A for Type 1 Class 5

NSN 6640-01-459-4239