EPA Method 524 & 624 - Internal Standard Back Catalog number: 19494 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 94152 Semi-Volatile Standard Price on request 9347.6-100MG DL-Isopropylindeneglycerol-1,1,2,3,3-d5 Price on request 9058.7-K-IP 4,5,6-Trichloroguaiacol , 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 2668-24-8 Price on request