Biosafety in Biomedical and Microbiological Laboratories (BMBL) 3rd Edition Published jointly by the CDC and NIH
Materials & Methods - Common Laboratory Protocols - Chemicon International
megaConverter - Unit conversion calculator online
Molecular Biology Protocols at NWFSC-NOAA - Molecular Biology Protocols (NWFSC) is an excellent site that contains protocols for DNA purification, transformation and sequencing, PCR, electrophoresis and homology searches. The site also has a molecular biology techniques forum.
Conversion of Units - Science Made Simple, Inc.
WebElements Periodic Table at U. Sheffield, UK
"The only limits are, as always, those of vision." James Broughton