Pilot Iroshizuku Fountain Pen Ink 50ml

Pilot Iroshizuku Fountain Pen Ink 50ml

Tsuki-yo (moonlit night)
£29.95
£29.95
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Pilot Iroshizuku Fountain Pen Ink 50ml
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  • Pilot Iroshizuku Fountain Pen Ink 50ml
  • Pilot Iroshizuku Fountain Pen Ink 50ml
  • Pilot Iroshizuku Fountain Pen Ink 50ml
  • Pilot Iroshizuku Fountain Pen Ink 50ml
  • Pilot Iroshizuku Fountain Pen Ink 50ml
  • Pilot Iroshizuku Fountain Pen Ink 50ml
  • Pilot Iroshizuku Fountain Pen Ink 50ml
Pilot Iroshizuku Fountain Pen Ink 50ml

Pilot Iroshizuku Fountain Pen Ink 50ml

Pilot Iroshizuku is Japan's prestige fountain pen ink line — dye-based, beautifully behaved, and available in colours named after Japanese nature. Made by Pilot Corporation, these are the benchmark against which most other fountain pen inks are compared.
Ink Type

Highly lubricated dye fluid — not waterproof
Volume

50ml flat-bottomed glass inkwell bottle
Waterproof

Low — will run if wet - Dry time: Fast relative to other premium inks
Shading

Moderate in darker colours - Sheen Minimal
Sheen
Compatible With
Additinal Spec
Origin

Japan — Pilot Corporation
£29.95
£29.95
Taxes included. Shipping calculated at checkout.
ColourTsuki-yo (moonlit night)

No guide assigned.
Shipping

Packaging: 

We know art supplies are fragile. All professional pair and boards are shipped in reinforced rigid flat mailers. No tubes, no folds, no crushed corners. 


Order Processing Times: 

Orders are processed within 1–2 business days - we always aim to dispatch all “in-Stock’ items within 24 hours..

Note: Orders placed after 2 PM GMT on Fridays will be processed the following Monday.

Domestic Shipping (UK):

Standard (2–4 days): £3.50 (Free for The Illustrator & Studio Master tiers).

Priority (1–2 days): £4.50 (Free for Studio Master tier)

International Shipping: 

We ship globally. Costs are calculated at checkout based on weight and destination. Please note that customers are responsible for any local customs duties or taxes.

Order Tracking: 

You will receive a tracking link via email the moment your tools leave our studio. 
Returns

30-Day Change of Mind: 

We offer a 30-day return window (exceeding the UK legal minimum of 14 days). Items must be unused, in original packaging, and in "as-new" condition.

Faulty Goods: 

In the rare event of a defect, you are entitled to a full refund or replacement within 30 days. We will cover all return shipping costs for faulty items.

Defective Nibs: 

Occasionally, a pen may arrive dry or a nib maybe scratchy. Contact us within 7 days of purchase with a photo/video of the issue and we will send a replacement immediately.

Exclusions:

Due to the nature of the product, unless faulty we cannot accept returns on opened markers or used paper pads returned.

Digital Goods: 

The "Birthday Palette" and other digital downloads are non-refundable once accessed.


How to Start a Return: 

Email studio@inkwellartsupplies.com with your order number. We aim to process all refunds to the original payment method within 5–10 business days of receiving the item
The Nib Safety Net

"Gravity Happens. We’ve Got You Covered."

We know the heartbreak of a fountain pen hitting the floor. As a member of our Creative Rewards, you don't have to worry about the 'tines.' If the worst happens, just send us a photo and we'll send you a 50% discount for a fresh start.

"The Nib Safety Net" – Terms & Conditions

  • Eligibility: This benefit is exclusive to active members of the Creative Rewards program at the time of the accident.
  • Coverage: The 50% discount applies strictly to accidental damage (e.g., dropping the pen) that renders the nib unusable. It does not cover intentional damage, loss of the pen, theft, or normal wear and tear.
  • The Claim: To activate your discount, you must provide a clear photo of the damaged nib and your original order number to oops@yourstore.com.
  • Limitations: This discount is valid for a one-time replacement per pen purchased and applies only to the cost of the replacement nib unit. It cannot be combined with other promotional codes or used for full pen replacements.
  • Availability: We will provide the discount for the exact nib model where stock is available. If the model is discontinued, we will offer a 50% discount on a comparable alternative nib unit.

The accessible Japanese benchmark

Iroshizuku occupies an iconic position in the stationery community: accessible and reliable enough for daily notes, yet visually rich enough for fine calligraphy and art journaling. The dye-based formula is heavily lubricated to ensure your nib glides across the page without hard-starts or skipping, drying quickly compared to other saturated inks. Every tone is an explicit color argument inspired by changing seasons and landscapes—*Tsuki-yo* captures the deep blue-green of a moonlit night, while *Kiri-same* reflects a soft autumn rain. The heavy, hand-blown 50ml glass inkwell features a deep, V-shaped interior well to ensure smooth, mess-free filling down to the last drop.

Honest Note:

Dye-based — not waterproof; this ink will run instantly if exposed to water or mixed-media watercolor washes. While highly acclaimed for modern writing instruments, Pilot Iroshizuku formulas have an elevated alkaline profile to optimize fluid flow. Because of this chemistry, you must never use Iroshizuku inks in vintage fountain pens that utilize traditional latex rubber ink sacs; the alkaline compound will soften and degrade the latex rubber over time. Use neutral European inks like Diamine for vintage sacs, and reserve Iroshizuku for your modern converters.

Who is it For?

  • Fountain pen enthusiasts who want a premium Japanese ink with wide availability
  • Beginners wanting their first premium ink — safe, reliable, and well-reviewed
  • Writers who want well-behaved inks with Japanese nature-inspired colour names
  • Anyone who wants a colour they can rely on in any fountain pen without concern

FREQUENTLY ASKED QUSTIONS (FAQ)

Is Iroshizuku safe in vintage fountain pens?

Yes — Iroshizuku is one of the safest inks available for vintage pens. The formulation is mild, well-lubricated, and has no properties that would harm vintage rubber, celluloid, or acrylic materials.

Which Iroshizuku colour should I start with?

Tsuki-yo (moonlit night — a deep blue-green) is the most discussed starting point. Shin-ryoku (deep green) is the best green in the range. If you want a reliable workhorse blue, Ama-iro (sky blue) is calm and consistently attractive.

Are Iroshizuku inks suitable for illustration?

For fountain pen illustration where waterproofing is not required — yes. They are not waterproof, so do not use them under wash. For illustration requiring permanence, use Kakimori or De Atramentis Document inks instead.

Works perfectly with....