Internal Reference Standard Back Catalog number: 52187 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2420.6-K-IP 2-Chlorophenol-3,4,5,6-d4,1000 µg/mL,isopropanol,1mL, Price on request BDE-66 2,3',4,4'-Tetrabromodiphenyl ether, 1.2ml x 50ug/ml, nonane Price on request 90605 EPA Method 8141/1657 Analytes Price on request