Method 1640 Tuning Standard Back Catalog number: 53147 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended A15644950AL-100 Norethisterone, 100µg/mL in Acetonitrile, 1ml Price on request 79514 Halothane Price on request 1989.9-2K-ME Tri-n-propyltin chloride Price on request