AVS The Science and Technology Society Standards and Recommended Practices, (AVS)
120 Wall Street, 32 Floor, New York, NY.
Recommended practices for measuring pump speed, throughput, outgassing, etc.

American Nat’l Standards Institute (ANSI) and (ISO),
11 West 42nd St., New York, NY - (212)642-4900
International standards on fasteners, gaskets, flanges, materials, etc..

American Society for Testing Materials (ASTM)
1916 Race St., Philadelphia, PA
Leak testing, properties of materials, pressure testing methods, etc..

American Society for Mechanical Engineers (ASME)
345 East 45th St., New York, NY
ASMA Pressure Vessel Code

National Electric Code (NEC)
Batterymarch, Quincy, MA
Standards dealing with electrical codes

MIL STDs
Englewood, CO, (303) 792-2181
Various military standards