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Purposes: To obtain an admission that calibration or re-calibration needs to be done by an entity that is accredited by ASCLD/LAB ANLAB to ISO 17025 standards. To obtain an admission that the local police service or local service centre which has conducted a re-calibration does not have such accreditation. The cross-examiner should have gone further on this issue to expand this line of questioning to Mega-Tech, Davtech, and GCS Technical Services. Sample cross-examination of

What is "reliability" in the context of a "quantitative analysis"? What does "reliability" mean in measurement science? We have a definition of INSTRUMENTAL "reliability" from Hodgson (Hodgson, Brian T., "The Validity of Evidential Breath testing", Can. Soc. Forensic Sci. J. Vol. 41 No 2 (2008) pp. 83-96) in the paper cited by the SCC in R. v. St‑Onge Lamoureux, 2012 SCC 57 (CanLII), [2012] 3 SCR 187, <https://canlii.ca/t/ftl1g>, but: Are there additional components to instru

Purpose: To educate the Court about good laboratory practice. To obtain an admission from the CFS scientist, that good laboratory practice requires contemporaneous documentation. To obtain an admission from the CFS scientist that good laboratory practice requires that a technician stop, document, and report whenever an anomaly occurs. To apply good laboratory practice to breath testing for a forensic purpose. Cross-examination of a CFS scientst: Q. All right. Paragraph 4.9.1