SDWA Trace Elements #3 Back Catalog number: 52327 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 683691 Atrazine-desisopropyl-2-hydroxy, 100 µg/ml, Metha Price on request 79042 Thionazine Price on request DF-IS-J20 Mass-Labelled PCDD Internal Standard Solution, 1.2ml, nonane Price on request