2,2’,3,3’,4,4’-Hexachlorobiphenyl (128) Back Catalog number: 63128 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 92269 Citric acid [2% wt] Price on request 95488 EPA Method 524.3 - Internal Standard Price on request 10330.16-100-ME Norcocaine hydrochloride, 100µg/ml in MeOH, 1ml Price on request