{"product_id":"sailor-pigment-fountain-pen-ink-50ml","title":"Sailor Pigment Fountain Pen Ink 50ml","description":"\u003ch2\u003eSailor 50ml Archival Nano-Pigment Fountain Pen Ink\u003c\/h2\u003e\n\u003cp\u003eFormulated by Sailor ink chemists in Japan, this 50ml bottled ink series utilizes micro-ground nano-pigment technology to deliver absolute permanence without compromising fountain pen reliability. Unlike conventional dye-based formulas that feather or wash away under moisture, Sailor pigment ink settles securely into paper fibers to create water-insoluble, lightfast, and document-proof lines. Available in three iconic shades—deep Kiwaguro (Ultra Black), vibrant Seiboku (Blue), and understated Souboku (Blue Black)—each bottle brings archival security to fountain pens, dip pens, and illustration tools alike.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eArchival Permanence:\u003c\/strong\u003e Micro-pigment formulation bonds permanently to paper, delivering complete waterproof, smudge-resistant, and lightfast results suitable for legal contracts, address labels, and watercolor line art.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnti-Clog Nano-Particle Chemistry:\u003c\/strong\u003e Ultra-fine suspended pigment particles flow smoothly through standard and fine fountain pen feeds, minimizing feathering and bleed-through even on absorbent paper.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuick-Drying Performance:\u003c\/strong\u003e Fast capillary absorption reduces wet-edge smearing for left-handed writers, rapid note-takers, and everyday office documentation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated Ink Reservoir:\u003c\/strong\u003e The heavy-base 50ml square glass bottle includes an internal cone-shaped reservoir that concentrates remaining ink for clean, complete converter fills when the bottle runs low.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThree Classic Japanese Colorways:\u003c\/strong\u003e Choose between deep matte-graphite Kiwaguro, rich shading Seiboku blue, and sophisticated muted Souboku blue-black.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sailor\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduct Line:\u003c\/strong\u003e Nano Pigment Ink\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVolume:\u003c\/strong\u003e 50 ml \/ 1.7 fl oz\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor Options:\u003c\/strong\u003e Kiwaguro (Ultra Black), Seiboku (Pigment Blue), Souboku (Blue Black)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInk Type:\u003c\/strong\u003e Water-based nano-pigment archival ink\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBottle Material:\u003c\/strong\u003e Heavy square glass with built-in ink reservoir and octagonal resin cap\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRecommended Use:\u003c\/strong\u003e Fountain pens with converter or piston mechanisms, calligraphy dip pens, technical drawing pens\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Japan\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will pigment ink clog my fountain pen?\u003c\/strong\u003e\u003cbr\u003e\nA: Sailor nano-pigment ink is specifically engineered for fountain pen use with ultra-fine sub-micron particles that maintain smooth capillary flow. However, because pigment particles dry permanently, we recommend capping your pen when not in use and flushing the feed with cool water every 4 to 6 weeks.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can this ink be used under watercolor or alcohol markers?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes. Once completely dry, Sailor nano-pigment ink becomes fully waterproof, making it a favorite among urban sketchers and comic artists for crisp linework that will not bleed under wet watercolor washes.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How does the built-in bottle reservoir work?\u003c\/strong\u003e\u003cbr\u003e\nA: Before unscrewing the cap, turn the closed bottle upside down and back upright once. The internal plastic cup captures ink at the top of the bottle neck, providing a deep filling well for your pen nib even when only a small amount of ink remains.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is the store's customer service and refund policy?\u003c\/strong\u003e\u003cbr\u003e\nA: Customer inquiries are handled post-order via our dedicated service email at szjyf@outlook.com. You can request a full refund anytime before your order's shipment is confirmed.\u003c\/p\u003e","brand":"Sailor","offers":[{"title":"Kiwaguro (Ultra Black)","offer_id":69020285435938,"sku":"SAILOR-INK-PG50","price":25.5,"currency_code":"USD","in_stock":true},{"title":"Seiboku (Pigment Blue)","offer_id":69020285468706,"sku":"SAILOR-INK-PG51","price":25.5,"currency_code":"USD","in_stock":true},{"title":"Souboku (Blue Black)","offer_id":69020285501474,"sku":"SAILOR-INK-PG52","price":25.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0902\/3045\/6354\/files\/IMG_20261021_170158.jpg?v=1792573812","url":"https:\/\/www.xypen.com\/products\/sailor-pigment-fountain-pen-ink-50ml","provider":"XYPen","version":"1.0","type":"link"}