Noodler's Ink Refills Polar Black 3oz. Bottled Ink - ND-19201
Eternal Polar Black 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.
Polar Black as with all Noodler's ink is water-based pH neutral and will easily wash off your pens. 3 ounces of ink per bottle.