QC Standard 5 Back Catalog number: 52088 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1038.18-200-T 4,5-Dimethylpyrene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 15679-25-1 Price on request 72825 Prosulfuron Price on request 11630-100G 2,2′-Azobis(2-methylpropionitrile), 100g Price on request