EPA Method 601 Internal Standard Back Catalog number: 19094 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11084.7-100MG 2,6-Dimethylpyridine,neat,neat,100mg, Price on request MTCC N-(4-chloro[13C6]phenyl)-N'-(3,4-dichloro[13C6]phenyl)[13C]urea , 1.2ml x 50ug/ml, methanol Price on request N0763 1,5-Naphthalenedisulfonic Acid Tetrahydrate, 25g Price on request