EPA Method 8270C Pesticide Mix #24 Back Catalog number: 91004 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 98808 Haloacetic Acids Price on request 71220 n-Tetracontane Price on request