EPA Method 548.1 Internal Standard Back Catalog number: 30078 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 72830 Halosulfuron methyl Price on request 14060-100AN5 PAH - Mix 18, 100µg/ml in Acetonitrile, 5ml Price on request 60007 Volatiles for Minnesota Dept of Health Price on request