For

United States Military Standard A United States defense standard, often called a military standard, "MIL-STD", "MIL-SPEC", or (informally) "MilSpecs", is used to help achieve standardization objectives by the U.S. Department of Defense. Standardization is beneficial in achievin ...

s, IEST-STD-CC1246 is the latest revision of MIL-STD-1246. This all came about in 1997, the Army Missile Command commissioned the Institute of Environmental Sciences and Technology (IEST) to revise and adopt MIL-STD-1246 as an industry standard as its usefulness had expanded far beyond

military A military, also known collectively as armed forces, is a heavily armed, highly organized force primarily intended for warfare. It is typically authorized and maintained by a sovereign state, with its members identifiable by their distinct ...

applications, and U.S. policy was requiring agencies to convert

government A government is the system or group of people governing an organized community, generally a state. In the case of its broad associative definition, government normally consists of legislature, executive, and judiciary. Government is a ...

standards to nongovernmental standards where practical. Borson, E.N.: "IEST-STD-CC1246D: Product Cleanliness Levels and Contamination Control Program". ''CleanRooms'', August 2005 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.

References

Standards of the United States {{US-mil-hist-stub