Noodler's Ink lubricating Black Bottled Ink Refill

• Polar Black -- Bulletproof -- Waterproof
• Safe for Vintage and New Fountain Pens
• EEL INK American-made eel inks contain added lubricants intended to keep piston-filled pens writing smoothly. With type of ink, the piston can maintain smooth sliding without becoming clogged.
• WATERPROOF - Bulletproof inks are resistant to water and tools of forgery such as bleach, alcohol, and UV light. These inks use cellulose-reactive dyes and work best on uncoated and cellulose-based papers.
• FOR FOUNTAIN PENS This ink is suitable for fountain pens, calligraphy, and piston-filled pens. For pens with skip-prone nibs, a permanent regimen of Eel Black can make them write consistently.

Polar Black Bulletproof Ink - same as Eel Polar Black. All of the great qualities of Noodler's Standard Permanent Black plus freeze-resistant even in Scandinavia! The manufacturer also states that Polar Black has lubricating properties for all pistons and converters -- tested to flow smoothly in all types of feeders! Writes very smoothly in a rich dark black color. This listing is for a 3 oz. bottle of Noodler’s ink in Polar Black. The product is new, current product directly from the manufacturer. The bottle is glass with a distinctive Noodler’s Catfish label, and an outside Noodler’s box. This ink is all U.S. made and boasts Archival, Anti-Forgery and Anti- Feathering features. The ink is specifically designed for fountain pen use.