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 57047 Silver (Ag), 1000µg/ml in 2%-HNO3/Water, 100ml Price on request IBPO015 Brilliant Blue FCF (E 133), 1g Price on request S-4673-100-T Custom Mix of ketoPAHs, 3 compounds in toluene, 100ug/ml each 1684.17 1-Benzanthrone 9683.14 Anthrone 2322.16 9-fluorene Price on request