EPA Method 524 & 624 - Internal Standard Back Catalog number: 19494 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0362.22-K-IO 3-n-Octadecylthiophene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 104934-54-5 Price on request 71042 2,5-Dimethylpyrazine Price on request 676692 Azoxystrobin, 100 µg/ml, Acetonitrile, 1ml Price on request