Surrogate Mix Back Catalog number: 91986 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended KBIO-EBG-5ML ß-glucuronidase recombinant Escherichia coli Price on request 57914 Silicon (Si) Price on request 682120 Desacetyl cephapirin sodium salt, 10mg Price on request