title: [Evaluation on the capability of testing total dissolved solids of the provincial centers for disease control and prevention].
abstract: OBJECTIVE
  To evaluate the Centers of Disease Control and Prevention's (CDC) provincial divisions' capabilities of detecting concentrations of organoleptic and physical parameter of total dissolved solids by adopging a quality control assessment methodology of interlaboratory comparison.
  
  
  METHODS
  All laboratories had been divided into 2 groups of which contained 16 laboratories. Total dissolvedsolids' concentrations were assigned to 2 sample groups. Testing capabilities of the laboratories were evaluated through the use of robust statistical methods.
  
  
  RESULTS
  Thirty-two CDC provincial divisions, including municipalities under the central government and in autonomous regions, participated in this interlaboratory comparison. Thirty laboratories obtained positive results, accounting for 93. 8%. Two laboratories' results were suspicious, accounting for 6. 2%. Finally, no laboratories produced outliers.
  
  
  CONCLUSIONS
  The majority of provincial CDC participants in this interlaboratory comparison are capable of testing the concentrations of total dissolvedsolidsin drinking water.
authors.forename: Dongqing
authors.initials: D
authors.lastname: Chen
authors.forename: Shiyao
authors.initials: S
authors.lastname: Li
authors.forename: Ningtao
authors.initials: N
authors.lastname: Cao
authors.lastname: Yang Jiaolan
mesh_terms: D002487:Centers for Disease Control and Prevention, U.S.; D060766:Drinking Water / Q000032:analysis*; D006801:Humans; D007753:Laboratories / Q000592:standards*; D059021:Laboratory Proficiency Testing / Q000592:standards*; D014481:United States
chemical_list: D060766:Drinking Water