EPA Method 524 & 624 - Internal Standard Back Catalog number: 19494 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 14500-0440-10CY10 Dibenz(a,h)anthracene, 10μg/ml in Cyclohexane, 10ml Price on request 59879 Germanium (Ge) Price on request 70069 Chlorobenzene-d5 Price on request