Reflections on variability in the blood–breath ratio of ethanol and its importance when evidential breath-alcohol instruments are used in law enforcement Posted on January 31, 2023March 9, 2023 By Becky Carter Forensic Sci Res; 5(4); 2020 Access article Alcohol, Chemistry, Crime Scene Investigation and Reconstruction, DREs / Traffic Safety Resource Prosecutors, Forensic Pathology and Medicolegal Death Investigation, Toxicology