During a s. 8 Charter voir dire in a firearms prosecution, the Crown sought to qualify a forensic document chemist as an expert in ink dating using the solvent loss ratio method to analyze a police officer’s note allegedly documenting information from a confidential informant.
The defence opposed the admission of the proposed expert evidence.
Applying the framework for novel scientific evidence, the court considered whether the technique had been tested, peer reviewed, subject to standards or known error rates, and generally accepted.
The court found the methodology lacked peer review, established standards, demonstrated testing, and general acceptance in the relevant forensic community.
The proposed evidence was therefore inadmissible and, in any event, had little probative value because the analysis could not determine the age of the ink.