Noodler's Ink Eternal Polar Blue Bottled Ink Refills 3oz
"Eternal" Polar Blue resists the effects of time - moisture, humidity, UV light, acids, water exposure, and many common detergents such as dish soaps and household ammonia, as well as alcohols and acetone. It is a vibrant, intense Royal blue designed for use in all fountain pens.
Polar Blue, as with all Noodler's ink is water-based, pH neutral and will easily wash off your pens. 3 oz. Ink Bottle