Another photograph of the pens I used in an experiment a few years ago (mentioned in the October 24th edition of Chemical & Engineering News, by the way). I was testing how well different inks stood up to water and other solvents, and the outcome is part of my “How to maintain a laboratory notebook” page. If for some reason you’d like to see previous photograph of pens, see this post. And, yes, that is a fountain pen in the beaker — a Cross (with Noodler’s Polar Blue).
Leave a Comment below to tell me about your favorite pen for science.