This month, we picked for you a few of the many Web sites that have been nominated to the Best Chemical Web Sites Contest during March 2002. The contest is open to web sites or web pages of clear, relevant interest to chemists, chemical engineers, chemical industry professionals, and students. Sites must be in English and must be free to users. Winners will be selected in four categories, based on a site's usefulness, accuracy, breath and depth of content, presentation, and ease of use. To nominate your own site or a favorite, please click here.

Online course & tools:

FreeCalc.com
On-line application for engineering design. This site contains interactive online calculators for liquid and gas flow, HVAC, pumps, heat transfer, vessels and tanks, valves and piping, and separation equipment.
http://www.freecalc.com

Shula's home page for HPLC and LC-MS
Comprehensive guide to HPLC, LC-MS and FTIR related material with tutorials, support material and on-line courses.
http://shulalevin.tripod.com

Portals & information hubs:

Matweb - Materials Information Database
This is an excellent, free, searchable source of materials data.
http://www.matweb.com

ChemFinder
ChemFinder.com is the home of the award-winning, free database of over 75,000 common chemical compounds with links to further information on the Internet.
http://www.chemfinder.com

Molecular Expressions
Molecular Expressions Website features acclaimed photo galleries that explore the fascinating world of optical microscopy. It offers one of the Web's largest collections of color photographs taken through an optical microscope. This Website is brought to you by the Optical Microscopy Division of the National High Magnetic Field Laboratory, a joint venture of The Florida State University, the University of Florida, and the Los Alamos National Laboratory.
http://micro.magnet.fsu.edu/

Corporate sites:

Molecular Probes
Molecular Probes is a biotechnology company specializing in the area of fluorescence technology. The site is well organized and provides thorough background of the fluorescent probes technology as well as a wealth of related information.
http://www.probes.com

Chemexper
Provides information about over 100.000 chemicals, 6000 infra-red, 12000 MSDS, 15000 3D structures.
http://www.chemexper.com

Chemistry & engineering schools:

Texas State Technical College
The web site of Texas State Technical College at Waco provides information, syllabus, class notes, tutorial programs, and a streaming video of each lecture for selected courses.
http://www.chemtech.org

SpectroscopyNOW.com
FREE ACCESS to all 8
spectroscopy Techniques at spectroscopyNOW.com. The new dedicated spectroscopy portal from Wiley now offers you online access to all of the major techniques - Atomic, Raman Spectroscopy, Ultraviolet, Mass Spectrometry, Nuclear Magnetic Resonance, X-ray Spectrometry, Chemometrics, Infrared. Housing a wealth of valuable information, resources and services for all members of the spectroscopy community. SpectroscopyNOW.com (http://www.spectroscopynow.com/) is the comprehensive online resource not to be missed. Check it out for FREE NOW.

ChemDeals.com is a full-service, online trading system for surplus industrial chemicals, specialty chemicals, and other raw materials. ChemDeals.com provides a marketplace where chemical industry manufacturers, distributors, processors, and other buyers and sellers can trade their excess chemical inventories in an efficient, anonymous, and hassle-free manner.
http://www.chemdeals.com

Solve Scientific Problems for Cash
InnoCentive is an online venture offering cash rewards for chemistry fanatics who deliver the best solutions to scientific problems. Break down the lab doors and get up to $100,000 USD! http://www.innocentive.com