Internal standard 3, 2000g/ml in MeOH, 1ml Back Catalog number: 30069 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 8754.3-1G Melamine cyanurate, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. Price on request 1616.14-10MG 4-Methyldiphenylmethane, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 620-83-7 Price on request 63121 PCB No. 121, 1000μg/ml in Isooctane, 1ml Price on request