Method 1640 Tuning Standard Back Catalog number: 52147 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 98859 Formaldehyde-DNPH Level 2 (0.5ug/mL) Price on request 13768.9-100-ME Lamotrigine-13C3,d3, 100µg/ml in MeOH, 1ml Price on request 678440 Metalaxyl, 100 µg/ml, Acetonitrile, 5ml Price on request