4,4'-DDE, 100 µg/ml, Methanol, 1ml Back Catalog number: 679459 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 93233 Method 4 Standard 1 Price on request 677557 tert-Butylhydroquinone, 250mg Price on request 59104 Sulphate (SO42-) Price on request