Method 200.8/1638/1640 Internal Standard Back Catalog number: 53145 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 674571 Swep, 10.0 µg/ml, Acetonitrile, 10ml Price on request 82720 Appendix IX Pesticide Mix #2 Price on request 73917 Atorvastatin, 1000µg/ml in MeOH, 1ml Price on request