IP 391-95 Calibration Level 4 Back Catalog number: 98404 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 677799 Succinic acid, 250mg Price on request 2232.7-100-5AN Patulin, 100µg/mL, Solvent-acetonitrile, Unit 5mL, # of units-1, Cas.no. 149-29-1 Price on request 685064 epsilon-HCH, 10.0 µg/ml, Acetonitrile, 1ml Price on request