Trace Metals Back Catalog number: 59048 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 679447 Heptachlor, 100 µg/ml, Methanol, 1ml Price on request 10633.12-50-NN 1,2,3,4,7,8-Hexachlorodibenzofuran ,50 µg/mL,n-nonane,1mL, Price on request 30026 Bentazon methyl derivative Price on request