Caffeine, 100 µg/ml, Methanol, 1ml Back Catalog number: 677301 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 685456 4,4'-Dichlorobenzhydrol, 250mg Price on request 673545 Dichlorvos, 10.0 µg/ml, Ethyl acetate, 10ml Price on request XA15987120ME Perfluorooctane sulfonic acid, 100 ng/µl, 1ml Price on request