WS PAH Calibration Level 4 Back Catalog number: 92605 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended XA17875000AL Trimethoprim, 100μg/mL in Acetonitrile, 1ml Price on request 2695.24-100MG Tri-n-octyltin chloride, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 2587-76-0 Price on request L20950018AL PAH-Mix 18, 10 ng/µl, 10ml Price on request