QC-21 Back Catalog number: 59162 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended MBP-188 2,2',3,4',5,6,6'-Heptachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane Price on request 685903 D5-Pendimethalin, 100µg/ml in Acetone, 1ml Price on request 672816 Bensulfuron-methyl, 100mg Price on request