Technical Pen Waterproof Drawing Ink Black 25ml (Compatible with Rotring Isograph Pens)

DEEP BLACK COLOUR: Formulated with intense black pigment, this waterproof drawing ink delivers striking, high-contrast lines that resist fading; ideal for writing, fine line work & hand-drawn illustrations COMPATIBLE PEN: Designed for seamless use with Rotring Isograph refillable fountain or dip pens, this 25 ml bottle offers reliable ink flow; easily refill your pen without needing to replace it WATERPROOF & SMUDGE RESISTANT: Say goodbye to ink bleeding or smearing & ruining your hard work; this ink dries quickly & bonds to paper for a neat & clean result, reducing the risk of accidental damage SUITABLE FOR ALL: Whether you're a professional artist or a painter amateur, this ink is ideal for designers, sketchers, art students & school pupils; it is suitable for use in a studio or school EASY STORAGE: The sturdy & waterproof plastic container ensures your ink stays fresh for easy technical pen refills with no mess or waste to slow down your creative process