EPA Method 524 & 624 - Internal Standard Back Catalog number: 19794 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 70207 4,4’-Methoxychlor Price on request 0917.14-500-IO 2,4-Dimethyldiphenylsulfide, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 16704-47-5 Price on request EPA-533ES EPA Method 533 Isotope Dilution Standard PDS, in MeOH, 1,2ml Price on request