525 Surrogate Standard Back Catalog number: 95270 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 90497 Carbazole Price on request 3914.16-100-ME Crotaline, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 315-22-0 Price on request 11693.12-100-IO 2,3,3',5'-Tetrachlorobiphenyl ,100 µg/mL,isooctane,1mL, Price on request