EPA Method 624 Surrogate Standard Back Catalog number: 19112 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 96017 Volatile Mix #2 Price on request 2543.20-K-ME Amitriptyline hydrochloride, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 549-18-8 Price on request 98864 Formaldehyde-DNPH Level 7 (20ug/mL) Price on request