13C3-Caffeine, 100 µg/ml, Methanol, 1ml Back Catalog number: 681491 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended L10360000AL Azinphos-ethyl, 10µg/mL in Acetonitrile, 10ml Price on request 8648.12-50-T 1,2,4,6,7-Pentachlorodibenzo-p-dioxin, 50µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. Price on request S-4332-100-HE B[a]P/HCB Recovery standard 1337,16 Fluoranthene-d10 100 000ng/ml Solvent: n-Hexane Units: 1mL crimp-top Price on request