EPA Method 552 Internal Standard Back Catalog number: 30055 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0667.27-50-IO C27 1-Methyl triaromatic sterane, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 80382-27-0 Price on request 98352 3-Iodo-2-propynyl N-butylcarbamate Price on request 94733 2,4-Diaminoanisole Price on request