EPA Method 8330 Analyte Back Catalog number: 79072 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8581.6-100MG Perfluorohexane sulfonic acid, potassium salt,neat,neat,100mg, Price on request 72653 Di-n-propylamine Price on request 96179 Pesticide Mix #1 Price on request