More and more of us seem to be using fountain pens in our field sketching. (There's even a little beauty in our photo montage banner.) I do too. But, it wasn't till I received a really nice NOS Eversharp as a gift in early November (and immediately started putting its delicious flex nib to work) that I started wondering how fountain pen inks compare, say, to the microns and dip pen inks we also use.
Since there seems to be a dearth of information on lightfastness and pH levels from the manufacturers I thought I'd take a very short break from sketching, do my on series of tests and articles, and share the results. For anyone interested, I begin the series here this week with a selection of blues.