EPA Method 548.1 Analyte Back Catalog number: 30077 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 54190 Sodium Formate (CHO2-) Price on request 11440.22-100-IO 4-tert-Butylphenyldiphenyl phosphate-d13,100 µg/mL,isooctane,1mL Price on request 1133.13-10MG n-Tridecane, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 629-50-5 Price on request