4,4'-DDE, 100 µg/ml, Acetonitrile, 5ml Back Catalog number: 678380 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended S-13638A1-1ML Triasuluron, 100µg/ml in Acetonitrile, 1ml Price on request 681707 Methotrexate hydrate, 100mg Price on request 1330.22-100-T Dibenz[a,h]anthracene-d14, 100µg/mL in Toluene, 1ml Price on request