Oil-based marker uni-ball PX-30 red (model UNPX30/6CE)

The uni-ball PX-30 red oil-based marker is designed to provide reliable, fade-resistant marking on paper, cardboard and a variety of non-porous surfaces. The model delivers a consistent pigment flow and a durable red line suitable for labeling, industrial marking, crafts and everyday office use. The marker’s steady tip ensures clear, readable marks while the oil-based ink resists smudging and fading over time.

Advantages

The oil-based formulation gives the uni-ball PX-30 strong adhesion and good resistance to water and light, resulting in long-lasting, legible markings. The tip maintains an even flow of pigment, reducing skips and ensuring consistent line quality. Its colour is vivid and stable, which helps maintain visibility on a range of materials from paper and cardboard to many non-porous surfaces.

Suitable for

• Labeling boxes, files and storage items
• Industrial and workshop marking on prepared surfaces
• Crafts, hobby projects and poster work
• General office use where durable red marks are required

When it may not be suitable

The uni-ball PX-30 oil-based marker is not ideal for use on highly absorbent textiles where ink may bleed excessively. It may also be less suitable for very smooth, glossy plastics or glass unless the surface is prepared or primed first, as adhesion can vary on certain non-porous substrates. For applications requiring permanent solvent-proof marking on all plastics or glass, a specialist permanent marker formulated specifically for those substrates may be preferable.

Key specifications

• Ink type: oil-based pigment ink
• Colour: red
• Line quality: consistent, durable line suitable for writing and marking
• Tip: steady, firm tip for clear, readable marks
• Suitable surfaces: paper, cardboard and many non-porous surfaces

How to use

Shake the marker briefly before use to mix the pigment. Test the marker on a scrap piece of the intended surface to confirm adhesion and line thickness. Apply even pressure while writing or marking to maintain a consistent flow of ink. Allow markings to dry completely before stacking or handling to avoid smudging. Cap the marker securely after use to prevent the tip from drying out.

What to consider before purchase

• Confirm the marker’s compatibility with the specific material you plan to mark (test on a small area if uncertain).
• Consider whether oil-based ink properties (water and light resistance) meet your durability needs.
• Check line thickness required for your task to ensure the tip delivers the desired visibility.

Usage recommendations

Use the uni-ball PX-30 on clean, dry surfaces for best results. For smooth plastics or glass, lightly degrease or roughen the surface to improve adhesion. Store horizontally or with the cap on to maintain tip performance and ink longevity.