The Pigma Micron from Sakura has archival quality ink for use in acid free environments, is chemically stable, waterproof and fade resistant. No smears, feathers or bleed-through on most paper. You can even use it on fabrics (as long as it's decorative only and not on something to go through the wash).
UK Stockist Pigma Micron Pens
BuJo Pens Bullet Journal Pens