The FDA Office of Chemistry and Toxicology (OCT), Division of Bioanalytical Chemistry (DBC), Chemical Contaminants Branch (CCB) requires the purchase of a gas module to be coupled to an existing mass ... The FDA Office of Chemistry and Toxicology (OCT), Division of Bioanalytical Chemistry (DBC), Chemical Contaminants Branch (CCB) requires the purchase of a gas module to be coupled to an existing mass spectrometer to be used to measure toxic and nutritional elements in foods and dietary supplements. Please see the attached solicitation for more details.