EPA Method 525 - Internal Standard Back Catalog number: 30031 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 72649 Bromoform-d Price on request 1537.18-100-TX5 p-Terphenyl-d14, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-5, Cas.no. 1718-51-0 Price on request C16178700 Phthalic acid, mono-n-butyl ester, certified, 0.1g Price on request