EPA Method 524 & 624 - Internal Standard Back Catalog number: 19494 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1147.27-K-IO n-Heptacosane, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 593-49-7 Price on request 79687 Methyl 4,7,10,13,16,19-docosahexaenoate (C22:6n-3) Price on request EPA-8280ISB Additional Internal Standard Solution, 1.2ml, toluene Price on request