The Well-Appointed Desk Col-O-Ring Ink Testing Book (Standard Size) is a must-have for ink lovers and pen enthusiasts. Designed for swatching and testing fountain pen inks, each book features premium 100lb acid-free paper that resists feathering and bleed-through, perfect for dip pens, brushes, or swabs. Its sturdy chipboard covers and removable ring make organizing your ink samples easy and durable for long-term use.

• Size: 2" × 4" with rounded corners
• 100 sheets of 100lb / 160gsm acid-free European paper
• Suitable for fountain pens, dip pens, swabs, or paintbrushes
• Sturdy letterpress-printed chipboard covers in black
• Split ring allows pages to be added, removed, or rearranged