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3 Traceability: Reference Materials
(30) If method calibration in a CMP is performed with a pure substance (analyte), will the result be traceable?
(31) An instrument provides a response that depends critically on its operational variables. Through which operation can consistency between calibration
results and sample results be assured?
(32) What type of CMP resembles PMPs most closely? Why?
(33) Are the chains of comparisons involved in realizing traceability always of
the linear type? Can they be branched? Cyclic?
(34) Give some examples of method calibration.
(35) What is the sample custody chain?
(36) Comment on the different aspects of traceability of (a) a result, (b) a CRM,
(c) an instrument and (d) a CMP.
(37) Explain the different connotations of the term "chain of comparisons" in
the definition of traceability of a result.
(38) Which meaning of traceability is not based on standards?
(39) Relate traceability to capital analytical properties.
(40) How can the different aspects of traceability in the analytical chemical
domain be ranked?
( 41) Define the word "trackability".
(42) How can a CMP be evaluated in global terms?
( 43) Why is uncertainty relevant in establishing the traceability of a result?
(44) Comment on the special connotations of traceability of a CMP.
(45) What role do standards play in control graphs?
(46) Explain how the results of different laboratories can be made comparable
through traceability.
(47) Give several examples to demonstrate that traceability is an incomplete
property if it is not accompanied by its "history".
(48) Is traceability a new approach to analytical quality? Why?
(49) Explain the paths a routine laboratory can follow to realize traceability in
the results it produces.
(50) What is the most relevant aspect of traceability of an instrument or apparatus?
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