International Nitrogen Services, LLC
Leases on-site non-cryogenic nitrogen production systems to the drilling, well servicing, pipeline and industrial sectors. Located in Houston, Texas. Offers technical explanations and documentation.
http://www.n2services.com/

CRYOFAB
Cryogenic equipment, dewars, vessels, vacuum insulated pipe, liquid nitrogen, helium, nitrogen
http://www.idealgraphics.com/cryofab/

Stabilized Nitrogen Fertilizer Products from Agrotain International LLC
UMAXX and UFLEXX - nitrogen efficiency products for the international urea fertilizer market. Products for professional lawn care, golf course maintenance and specialty applications. Includes animated stabilized nitrogen cycle demo.
http://www.stabilizednitrogen.com

Nitrogen fixation
This web site is not designed to be a comprehensive presentation on nitrogen fixation, but rather it is intended as a forum to present informative images that are not otherwise easily available.
http://academic.reed.edu/biology/Nitrogen/

Nitrogen Fixation Research Center
Studies on the biological fixation of nitrogen at the National Autonomous University of Mexico.
http://itzamna.cifn.unam.mx/

JC Controls
JC Controls, Manufacturer of Liquid Nitrogen Level Controls for over 20 Years
http://www.ln2.net/

Significance of anthropogenic nitrogen for central Baltic Sea N-cycling (SIGNAL)
Addresses the question of eutrophication sources and what impact additional nitrogen has on the productivity in remote regions. Find project objectives, methods, results and photos.
http://www.io-warnemuende.de/projects/signal/index.html

VBS Industries, Inc.
Are you looking for products and services for liquid nitrogen transfer systems? Cryotech International supplies...
http://www.vbsflex.com/

VBS Industries, Inc.
Are you looking for products and services for liquid nitrogen transfer systems? Cryotech International supplies...
http://www.vbsflex.com/

ENVEG - Nitrogen for Vegetables
This is a European network representing fifteen countries set up to provide a forum for exchange of research information. Research findings on how to improve techniques of nitrogen fertilization are shared with researchers, industry and governments.
http://www.hri.ac.uk/enveg/