Noodlers Ink 3 Oz Polar Blue Eternal
Noodler's Ink has formulated a new Polar Blue Bulletproof (waterproof bleachproof UV light resistant) lubricating ink that will withstand the most extreme temperatures without freezing in your pen. 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.