IEST-STD-CC1246D
Encyclopedia
IEST
IEST
The Institute of Environmental Sciences and Technology is a non-profit, technical society. Information on ISO 14644 and ISO 14698 Standards can be found through this organization....

-STD-CC1246D
, published in 2002,is the latest revision of MIL-STD-1246D. This all came about in 1997, the Army Missile Command commissioned IEST
IEST
The Institute of Environmental Sciences and Technology is a non-profit, technical society. Information on ISO 14644 and ISO 14698 Standards can be found through this organization....

 to revise and adopt MIL-STD-1246 as an industry standard as its usefulness had expanded far beyond military
Military
A military is an organization authorized by its greater society to use lethal force, usually including use of weapons, in defending its country by combating actual or perceived threats. The military may have additional functions of use to its greater society, such as advancing a political agenda e.g...

 applications, and U.S. policy was requiring agencies to convert government
Government
Government refers to the legislators, administrators, and arbitrators in the administrative bureaucracy who control a state at a given time, and to the system of government by which they are organized...

standards to nongovernmental standards where practical.

The updated standard was written because of a need to define quantitative cleanliness levels for products that included components and fluids. Levels were defined for both particulate and nonvolatile residue (NVR) molecular contaminants.
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