Traditional dye colorant formula ensures vibrant, consistent color for writing and drawing
Sheening effect enhances the visual appeal on premium papers such as Tomoe River and Rhodia
50 ml bottle provides approximately 62 standard converter refills for long-lasting use
Swatch produced with a cotton swab on Tomoe River paper for accurate color representation
Summarized by Shop
Engineered for chromatic complexity, Quantum Teal writes with an ultra saturated, rich teal base that dries with a metallic violet sheen on quality writing papers. The color shifts dark teal with dryer strokes and on sorbent papers.
Quantum Teal is part of the Keystone Formula fountain pen ink line, our traditional dye-colorant ink. The
Volume
50 ml
Color
Quantum Teal (Purple)
Refill Estimation
Approximately 62 standard converter refills (0.8 ml draw)
Paper Compatibility
Tomoe River, Rhodia, 68 gsm
Pattern
Solid
Summarized by Shop
4.9
14 ratings
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1
Order was shipped and delivered faster than expected. Ink was EXTREMELY well packaged and the sheen is amazing. Will definitely come back and order again
J
Joshua · July 25, 2026
The color is so fun!
Kristi · February 26, 2024
It doesn’t have the purple tone it shows in the photo. It’s a beautiful teal but none of that reads in a pen stroke.