---
product_id: 50823408
title: "Liquidraw Technical Pen Red Ink – 25 ml | Waterproof Drawing Ink | Compatible with Rotring Isograph Pens | Plastic Refill Bottle, Screw-On Lid | Ideal for Illustration, Calligraphy & Drawing"
brand: "liquidraw"
price: "£3.83"
currency: GBP
in_stock: true
category: "Liquidraw"
url: https://www.desertcart.co.uk/products/50823408-liquidraw-technical-pen-red-ink-25-ml-waterproof-drawing-ink
store_origin: GB
region: United Kingdom
---

# Waterproof & smudge-resistant Rotring Isograph compatible refill 25 ml precision ink volume Liquidraw Technical Pen Red Ink – 25 ml | Waterproof Drawing Ink | Compatible with Rotring Isograph Pens | Plastic Refill Bottle, Screw-On Lid | Ideal for Illustration, Calligraphy & Drawing

**Brand:** liquidraw
**Price:** £3.83
**Availability:** ✅ In Stock

## Summary

> 🖌️ Ink that keeps your ideas flowing—bold, precise, and waterproof.

## Quick Answers

- **What is this?** Liquidraw Technical Pen Red Ink – 25 ml | Waterproof Drawing Ink | Compatible with Rotring Isograph Pens | Plastic Refill Bottle, Screw-On Lid | Ideal for Illustration, Calligraphy & Drawing by liquidraw
- **How much does it cost?** £3.83 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/50823408-liquidraw-technical-pen-red-ink-25-ml-waterproof-drawing-ink)

## Best For

- liquidraw enthusiasts

## Why This Product

- Trusted liquidraw brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Mess-Free Refilling:** Ergonomic screw-on lid and plastic bottle ensure clean, controlled ink refills every time.
- • **Trusted by Creatives:** Ideal for illustrators, architects, designers, and calligraphy pros demanding consistent quality.
- • **Vibrant Red Precision:** Bold, high-contrast red ink perfect for fine lines and technical drafting.
- • **Permanent & Waterproof:** Ink dries quickly to a smudge-proof, bleed-resistant finish for lasting artwork and notes.
- • **Seamless Pen Compatibility:** Specifically formulated for smooth flow in Rotring Isograph and other refillable pens.

## Overview

Liquidraw Technical Pen Red Ink offers 25 ml of vibrant, waterproof red ink designed for technical pens like Rotring Isograph. Its smudge-resistant formula ensures crisp, permanent lines ideal for illustration, calligraphy, and detailed drawing. The sturdy plastic refill bottle with a screw-on lid provides a mess-free refill experience, making it a reliable choice for professionals and creatives seeking consistent, high-quality ink performance.

## Description

Liquidraw Technical Pen Red Ink – 25 ml | Waterproof Drawing Ink | Compatible with Rotring Isograph Pens | Plastic Refill Bottle, Screw-On Lid | Ideal for Illustration, Calligraphy & Drawing : desertcart.co.uk: Home & Kitchen

## Features

- STRIKING COLOUR: This 25 ml bottled ink delivers a bold red tone designed for clear, high-contrast drawing, writing & illustration; ideal for fine line work, sketching & technical drafting
- ISOGRAPH-COMPATIBLE: Formulated for smooth flow in Rotring Isograph technical pens, dip pens & other refillable drawing pens; easily refill your pen without needing cartridges or disposables
- WATERPROOF & SMUDGE-RESISTANT: Once dry, the waterproof ink helps prevent bleeding or smearing on paper, supporting crisp, permanent results in precise technical art & calligraphy
- SUITABLE FOR ARTISTS & DESIGNERS: A reliable choice for illustrators, architects, designers, experts, art students & anyone who needs consistent ink performance for technical drawing, calligraphy or detailed lines
- EASY REFILL BOTTLE: The sturdy plastic bottle with screw-on lid keeps your ink secure between uses; designed for smooth, controlled refilling to minimise mess & support continuous creative work

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07289WPMP |
| Best Sellers Rank | 8,266 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 6 in Bottled Ink |
| Brand Name | Liquidraw |
| Container Type | Bottle |
| Country Of Origin | India |
| Customer Reviews | 4.4 4.4 out of 5 stars (375) |
| Ink Colour | Blue,Pink,Red,Black |
| Item Volume | 25 Millilitres |
| Manufacturer | Liquidraw |
| Manufacturer Part Number | NK100 - RD |
| Number of Items | 1 |
| Paint Type | Watercolour |

## Product Details

- **Brand:** Liquidraw
- **Item volume:** 25 Millilitres
- **Manufacturer:** Liquidraw
- **Package information:** Bottle
- **Paint type:** Watercolour

## Images

![Liquidraw Technical Pen Red Ink – 25 ml | Waterproof Drawing Ink | Compatible with Rotring Isograph Pens | Plastic Refill Bottle, Screw-On Lid | Ideal for Illustration, Calligraphy & Drawing - Image 1](https://m.media-amazon.com/images/I/71G3fsYkvOL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: Hi, can this be used with stamps/rollers? Thanks**
A: Sorry, I haven't a clue about that, I only uses the ink in rotring rapidograph and isograph pens.

## Frequently Bought Together

- Technoart Waterproof Drawing Ink, Red, 25ml (Bottle), Compatible with Rotring Isograph Pens
- Technical Pen Waterproof Drawing Ink BLUE 25ml (Compatible with Rotring Isograph Pens)
- Technical Pen Waterproof Drawing Ink GREEN 25ml (Compatible with Rotring Isograph Pens)

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**Shop now:** [https://www.desertcart.co.uk/products/50823408-liquidraw-technical-pen-red-ink-25-ml-waterproof-drawing-ink](https://www.desertcart.co.uk/products/50823408-liquidraw-technical-pen-red-ink-25-ml-waterproof-drawing-ink)

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-22*