ANSI standards National Standard Institute

To efficiendy drive the development of improved substrate materials, the limiting values of birefringence have to be known this is especially tme for WORM and EOD(MOR) substrate disks. These limit values were laid down by the ANSI (American National Standard Institute) Technical Standard Committee (186—188). For 5.25 in. WORM disks, the ANSI document X 3 B 11/88-144 recommends a maximum LEP value of 9% this corresponds to an optical path difference perpendicular to the plane of the disk of not more than 80 nm/mm (double path). For 5.25 in. EOD(MOR) disks, more stringent conditions apply (ANSI-document X 3 B 11/88-049), which also allow calculation of the allowed range. 

ABS—American Bureau of Shipping A ISC—American Institute of Steel Construction AISI—American Iron and Steel Institute ANSI—American National Standard Institute API—American Petroleum Institute ASA—American Standards Association ASTM—American Society for Testing and Materials AWS—American Welding Society... 

David L. Chaplin, The Meadows, Ryleys Lane, Alderley Edge, Cheshire SK9 7UV ANSI American National Standards Institute, 1430 Broadway, New York, NY 10018, USA ASME The American Society of Mechanical... 

ANSI American National Standards Institute, a private organization that is engaged in creating voluntary standards or characteristics and performance of materials, products, systems, and services. 

ANSI American National Standards Institute ANSI X12.27... 

ANSI American National Standards Institute. Founded in 1918, ANSI is a private, non-profit organization that administers and coordinates the U S. voluntary standardization and conformity assessment system. Its mission is to enhance both the global competitiveness of U.S. business and the quality of U.S. life by promoting and facilitating voluntary consensus standards and conformity assessment systems, and safeguarding their integrity. See www.ansi.org. 

ANSI - American National Standard Institute, which is an organization defining standards for computer language. 

ANSI American National Standards Institute, 1430 Broadway, New York, N.Y. 10018 www.ansi.org... 

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