EPA Method 8240A Internal Standard Back Catalog number: 22003 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 50625 Nitrite (NO2-) as N Price on request 3346.6-100-AN Clopyralid, 100µg/ml in Acetonitrile, 1ml Price on request 97618 Furans Mix #1 Price on request