Category:Strains - EcoliWiki. Strain Information of E. coli K12 MG1655. Strain Information Description Genotype: F- lambda- - -50 -1 Serotype: OR:H48:K- E.coli Database Portal. PortEco Home Page. E.coli Gene Expression Database (ver 2.0) E. Coli Statistics. Protocols. Sequencing. What you need to know about OD600. If you use a spec to measure cell density, you may making a very common mistake and taking inaccurate measurements as a result.
Specs are often used for measuring the density of suspension cultures, but the mistake that many people make is to record the OD given by the spec as an absolute value. The OD value represents the amount of light that is absorbed by your sample. But that value is affected by the intensity of the light beam in the spec, and the spec design.