EPA Method 8141A/1657 - Analytes Back Catalog number: 92800 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 12170.2-2K-ME Acetic acid-13C2,2000 µg/mL,MeOH,1mL, Price on request 50037 Sodium Sulfate (SO42-) Price on request H945870-10MG 5-(Hydroxymethyl)cytosine, 10mg Price on request