EPA Method 525 - Internal Standard Back Catalog number: 30031 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1109.13-100-TX5 2-Nitrofluorene-d9, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-5, Cas.no. 128008-87-7 Price on request 11702.12-100-IO 2,3',4',6-Tetrachlorobiphenyl,100 µg/mL,isooctane,1mL, Price on request 2219.28-10MG Bisanthene, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 190-39-6 Price on request