This commonplace in liquor stores and pharmacies: concentration by volume is v/v and by weight is w/w. https://www.bode-science-center.com/center/hand-hygiene

This commonplace in liquor stores and pharmacies: concentration by volume is v/v and by weight is w/w. https://www.bode-science-center.com/center/hand-hygiene/hand-disinfection/detail-hand-disinfection/article/ethanol-concentration-table-what-is-the-percentage-by-volume-or-weight.html https://www.bode-science-center.com/center/hand-hygiene/hand...