Uni-ball Eye UB-150 Rollerball Pen 10-Pack 0.5mm Pigment Ink

Uni-ball Eye UB-150 Rollerball Pen — 10-Pack, 0.5mm Waterproof Pigment Ink, Archival-Grade for Document Signing

Some documents can't afford to fade. Contracts, legal filings, medical records, lab notebooks, and archival manuscripts demand ink that lasts as long as the paper it's written on. The Uni-ball Eye UB-150 delivers exactly that — waterproof, lightfast pigment ink in a precision 0.5mm direct-liquid-feed rollerball that writes smooth, dries fast, and stays permanent for decades. Ten pens per pack. Three color options. Zero compromises on longevity.

Key Features

• Waterproof Pigment Ink: Unlike dye-based inks that dissolve when wet, the UB-150 uses pigment-based ink that bonds to paper fibers permanently — resistant to water, smearing, and accidental spills even after fully dried.
• Lightfast & Fade-Resistant: Pigment particles resist UV degradation — your writing won't fade, yellow, or ghost over years of storage, sun exposure, or fluorescent lighting.
• Archival-Grade Quality: Meets the permanence requirements for legal documents, official records, laboratory notebooks, and archival manuscripts — ink that outlasts the paper it's on.
• 0.5mm Fine Point: Precision tip produces crisp, consistent lines ideal for detailed writing, small print, annotations, and signatures that need to be clear and legible for years.
• Direct Liquid Feed System: Continuous ink delivery from reservoir to tip ensures skip-free, blob-free writing from the first stroke to the last drop — no shaking, no starting issues.
• Visible Ink Window: Transparent barrel section lets you monitor remaining ink levels at a glance — no surprise dry-outs mid-signature.
• 10-Pen Value Pack: Ten pens per set — stock your desk, outfit your office, or keep backups in every bag, drawer, and workstation.

What's Included

• 10 × Uni-ball Eye UB-150 rollerball pens (0.5mm)
• Ink Color: Choose Black, Blue, or Red at checkout

Available Ink Colors

• Black: The standard for legal documents, contracts, and official signatures — universally accepted, permanently legible.
• Blue: Distinguishes original signatures from photocopies — preferred by many legal and banking institutions for document authentication.
• Red: Ideal for corrections, grading, annotations, and markup — stands out clearly against black and blue text.

Why Pigment Ink Matters

Most rollerball and gel pens use dye-based ink — a liquid colorant dissolved in water. It writes smoothly, but it has a critical weakness: it's soluble. Spill water on a dye-based signature and it bleeds, smears, or disappears entirely. Leave it in sunlight and it fades within months.

The Uni-ball Eye UB-150 uses pigment ink — tiny solid color particles suspended in liquid. Once dry, these particles bond to paper fibers and become physically insoluble. The result:

• Water Resistance: A fully dried signature survives coffee spills, rain, condensation, and even brief submersion without bleeding or fading.
• Light Resistance: Pigment particles don't break down under UV exposure — documents stored near windows or under fluorescent lights stay legible indefinitely.
• Chemical Resistance: Resists common solvents including highlighter fluid — highlight over your writing without smearing it.
• Archival Permanence: Suitable for records intended to last 50+ years — legal archives, family documents, research notebooks, and historical records.

Ideal For

• Legal & Contract Signing: Permanent, waterproof signatures that meet archival standards for binding legal documents.
• Medical & Laboratory Records: Lab notebooks, patient records, and research data that must remain unalterable and legible for decades.
• Accounting & Finance: Checks, ledgers, and financial records that demand tamper-evident, fade-proof ink.
• Academic & Research Writing: Dissertation notes, thesis annotations, and peer-reviewed manuscript edits that need permanence.
• Government & Official Documents: Forms, permits, certifications, and records that require archival-quality ink by regulation.
• Journaling & Diary Keeping: Preserve personal history in ink that your grandchildren will be able to read — not faded ghosts of words.
• Envelope & Address Writing: Rain-proof addressing for outgoing mail — no more smeared delivery addresses in wet weather.
• Teachers & Graders: Red ink corrections that remain legible when students inevitably spill water on their papers.
• Artists & Illustrators: Waterproof linework that survives watercolor washes, marker blending, and wet media layering.

UB-150 vs. Standard Rollerball Pens

Specifications

• Model: Uni-ball Eye UB-150
• Brand: Mitsubishi Pencil Co. (Uni)
• Tip Size: 0.5mm fine point
• Ink Type: Waterproof pigment ink (direct liquid feed)
• Ink Colors: Black / Blue / Red (select at checkout)
• Quantity: 10 pens per pack
• Barrel: Transparent ink-level window
• Cap: Ventilated snap cap with pocket clip
• Water Resistant: Yes
• Lightfast: Yes
• Archival Grade: Yes

Great Gift Idea

A practical, premium gift for lawyers, doctors, scientists, accountants, teachers, writers, and anyone who signs important documents for a living. Perfect for new job celebrations, graduation (welcome to the signing world), office housewarming, teacher appreciation, and professional milestone gifts. The 10-pack format means they'll be stocked for months — a gift that keeps writing long after the occasion passes.

Storage & Tips

Store horizontally or cap-down to maintain optimal ink flow. Always replace the cap after use to prevent tip drying. The direct liquid feed system works best at room temperature — avoid prolonged storage in extreme heat or cold. For best results on archival documents, allow 30 seconds of drying time before handling or stacking papers.