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  		• Separations Science@
  		• Standards and Reference Materials@
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    Sites:
  		• Cerilliant Corp.: Offers custom synthesis, product certification and reference materials, including standards for drugs and environmental pollutants. Includes online catalog, global distributors, and profile of company in Round Rock, Texas.
  		• QMX Laboratories Limited: Offers GC capillary columns, SPE cartridges, syringe filters, vials, caps and septa, inorganic and organic reference materials, including deuterium labelled isotopes, and accessories for AA, XRF, ICP-AES and MS, from Thaxted, England.
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