The following links provide direct access where you may purchase standards directly from the Standards Development Organization and other organizations.

IAPMO	http://www.iapmo.org
ANSI	http://www.ansi.org
ASME	http://www.asme.org
ASSE	http://www.asse-plumbing.org
ASTM	http://www.astm.org
AWWA	http://www.awwa.org
CSA	http://www.csa-intl.org
FS STD	http://assist2.daps.dla.mil/quicksearch
GLOBAL (various standards)	http://www.global.ihs.com
ISO	http://www.iso.org
MIL	http://assist.daps.mil/quicksearch
MSS	http://www.mss-hq.com
NSF	http://www.techstreet.com/nsfgate.html
Techstreet (various standards)	http://www.techstreet.com
UL	http://www.comm-2000.com