PAH Standard Back Catalog number: 97812 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8484.15-50MG Metoprolol (free base),neat,neat,50mg, Price on request 682103 4-tert-Butylphenol, 100 µg/ml, Acetone, 5ml Price on request 2959.12-100-ME Methyl viologen-d8 dichloride (rings-d8) Price on request