I’m finally getting around to Richard Tarrant’s Texts, Editors, and Readers: Methods and Problems in Latin Textual Criticism, which bulbul gave me back in 2018, and I thought I’d quote this passage from the introduction (p. 11; I added a few links):
This is a 1974 photo from my first lab, with Canada Fisheries in Newfoundland, Canada. We were measuring arsenic in water, fish tissue, sediments, etc, by distillation of arsine into a solution of diethyldithiocarbamate in pyridine.…