[Evaluation on the capability of testing total dissolved solids of the provincial centers for disease control and...

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.

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.

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.

The majority of provincial CDC participants in this interlaboratory comparison are capable of testing the concentrations of total dissolvedsolidsin drinking water.