Method 1640Mix A Back Catalog number: 52146 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DF-123489-S 1,2,3,4,8,9-Hexachlorodibenzofuran, 1.2ml x 50ug/ml, toluene Price on request 53308 LPC Solution 3 Price on request 676874 Glutaraldehyde-DNPH, 100 µg/ml, Acetonitrile, 1m Price on request