EPA Method 8021B Internal Standard Back Catalog number: 19394 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 50398 ICP Mix #1 Price on request 71806 Acetic acid, 1000µg/ml in Water, 1ml Price on request BDF-1278 1,2,7,8-Tetrabromodibenzofuran, 1.2ml x 50ug/ml, toluene Price on request