Total DMRQA (Kit) - Pre 2006 Back Catalog number: 55074 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended M331190 N2-Methyl Trimethoprim (Impurity), 10mg Price on request 675869 Rifaximin, 100mg Price on request 11691.12-100-IO 2,3,4',4'-Tetachlorobiphenyl,100 µg/mL,isooctane,1mL, Price on request