This report describes the production and certification of IRMM-311, a reference material of genomic DNA (gDNA) of Bacillus Licheniformis DSM 5749 in agarose inserts. This CRM (IRMM-311) is intended to be used for the taxonomic identification of authorised probiotic feed additives by Pulsed Field Gel Electrophoresis (PFGE). The batch was found to be homogeneous and the material is stable at 4 °C. The batch was characterised by five laboratories determining the PFGE pattern of SfiI restriction enzyme digest of IRMM-311. The pattern should be considered as a whole and restriction fragments in the size interval from 50 kb to 90 kb are certified for their fragment length.JRC.D.2 - Reference material
