This approach allowed us to systematically identify all relevant studies indexed in PubMed up to 31 May 2022, and we extracted relevant data on risk of smoking, including study characteristics, following a pre-specified template (Supplementary Table 2)
We started with a hand crank machine, but it was a pita, so we quickly jumped to the PowerMatic II
Tolerance : Regular users often experience a reduced response
To ensure consistency and quality, request batch-specific Certificates of Conformance (CoC) or Certificates of Analysis (CoA), conduct regular supplier audits, verify ISO 9001 certification for quality management, and insist on lab testing performed by ISO 17025 accredited facilities
Filters were invented to protect the consumer and not degrade the experience