WS Trace Elements #2 Back Catalog number: 55013 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2821.7-50-ME n-Perfluoroheptanoic acid, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 375-85-9 Price on request 8016.24-100MG Bis(2-ethylhexyl) isophthalate, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 137-89-3 Price on request 12027.7-K-ME n-Pentyl acetate,1000 µg/mL,MeOH,1mL, Price on request