The Chemistry Laboratory Guidebook (CLG) contains test methods used by FSIS Field Service Laboratories to support FSIS regulatory activities. The CLG contains methods for the analysis of food composition, food additives, nutrients, veterinary drug and pesticide residues. Methods contained in the CLG are designed to provide FSIS analysts with written documentation to facilitate training, performance, quality assessment, and interpretation of data.  FSIS does not specifically endorse any of the products mentioned in the CLG and acknowledges other products may be available for laboratory use.

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Contents

Methods listed in this index are grouped as follows:

• Definitions for Chemistry Methods
• Residue Chemistry
  • Routine: Methods currently used on a regular basis in the FSIS laboratory system
  • Infrequent: Methods applied as needed for specific purposes in the FSIS laboratory system 
  • Inactive: Methods which are not currently in use in the FSIS laboratory system, but may be applied in unique circumstances
• Siluriformes Species Identification
• Food Chemistry 
• Inorganic Chemistry

Definitions for Chemistry Methods

Terms used in CLG methods are defined here.

Residue Chemistry (Routine)

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Residue Chemistry (Infrequent)

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Residue Chemistry (Inactive)

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Siluriformes Species Identification

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Food Chemistry

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Inorganic Chemistry

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All methods are offered as PDF documents. If you require an alternative format, please contact:

Chemistry Section
Laboratory Quality Assurance Staff, USDA/FSIS/OPHS
950 College Station Road
Athens, GA 30605 
Phone: (706) 546-3559