Asset identification
Discreetly mark equipment, tools, stock and property with an ownership reference.
Invisible marking • visible under UV
Personalised UV security stamps
Create a discreet personalised mark that fluoresces under ultraviolet light. Choose from eight genuine COLOP self-inking formats for logos, wording, asset IDs and verification marks.
8 of 8 UV stamp sizes currently available to order.
Genuine COLOP bodiesDependable self-inking mechanisms in eight useful formats.
Made in BlackburnArtwork, production and dispatch handled by Stamp Ninja.
Fully personalisedAdd your logo, wording, identifier or security mark.
Established productionOperating since 2017 with more than 100,000 stamps produced.
Eight genuine COLOP formats
Choose the impression area—not just the stamp body
Select the smallest size that keeps your design clear. Larger areas are better for detailed logos, longer wording and marks that need to be recognised quickly under UV light.
- Smallest
UV Security Stamp with Invisible UV Ink | Custom Personalised Stamp for Asset Marking, Property Identification, Anti-Theft Security & Document Verification | COLOP Printer C10
Regular price £21.99 GBPRegular price -
UV Security Stamp with Invisible UV Ink | Custom Personalised Stamp for Asset Marking, Property Identification, Anti-Theft Security & Document Verification | COLOP Printer C20
Regular price £23.99 GBPRegular price - Versatile
UV Security Stamp with Invisible UV Ink | Custom Personalised Stamp for Asset Marking, Property Identification, Anti-Theft Security & Document Verification | COLOP Printer C30
Regular price £24.99 GBPRegular price -
UV Security Stamp with Invisible UV Ink | Custom Personalised Stamp for Asset Marking, Property Identification, Anti-Theft Security & Document Verification | COLOP Printer C40
Regular price £28.99 GBPRegular price -
UV Security Stamp with Invisible UV Ink | Custom Personalised Stamp for Asset Marking, Property Identification, Anti-Theft Security & Document Verification | COLOP Printer C50
Regular price £39.99 GBPRegular price - Largest rectangle
UV Security Stamp with Invisible UV Ink | Custom Personalised Stamp for Asset Marking, Property Identification, Anti-Theft Security & Document Verification | COLOP Printer C60
Regular price £44.99 GBPRegular price -
UV Security Stamp with Invisible UV Ink | Custom Personalised Stamp for Asset Marking, Property Identification, Anti-Theft Security & Document Verification | COLOP Printer Q30
Regular price £24.99 GBPRegular price - Largest square
UV Security Stamp with Invisible UV Ink | Custom Personalised Stamp for Asset Marking, Property Identification, Anti-Theft Security & Document Verification | COLOP Printer Q43
Regular price £35.99 GBPRegular price
Practical security marking
Where invisible UV stamps earn their keep
Use a discreet mark where visible branding would be distracting, easy to copy or inappropriate.
Document verification
Add a hidden logo, code or control mark to certificates, passes and paperwork.
Events and access
Create a UV-visible entry mark for controlled admission and re-entry checks.
Schools and organisations
Identify books, resources, passes and shared property without an obvious visible mark.
Surface suitability matters
UV stamp ink performs best on absorbent matt paper, card and untreated labels. The impression may remain faintly visible under normal light, and results can vary on coloured, coated, glossy or non-porous materials. Test the intended surface before marking valuable or finished items.
Simple personalisation
From artwork to hidden impression
Choose the right format
Match your logo or wording to a rectangular or square impression area using the comparison below.
Add your design
Upload a logo or enter the wording required on the chosen product page, then review the preview carefully.
Stamp, dry and reveal
Apply the impression to a suitable test area, allow it to dry and check it with an appropriate UV light.
Size comparison
Compare all eight UV stamp models
Prices and availability are read directly from Shopify, so this table stays current when the products change.
| COLOP model | Impression area | Shape | Best for | Live price | |
|---|---|---|---|---|---|
| COLOP Printer C10 | 26 x 9mm | Rectangular | Initials, short codes and compact ownership marks | £21.99 | Personalise→ |
| COLOP Printer C20 | 37 x 12mm | Rectangular | Names, identifiers and short wording | £23.99 | Personalise→ |
| COLOP Printer C30 | 45 x 18mm | Rectangular | Compact logos and everyday asset marks | £24.99 | Personalise→ |
| COLOP Printer C40 | 58 x 22mm | Rectangular | Business logos and longer wording | £28.99 | Personalise→ |
| COLOP Printer C50 | 70 x 30mm | Rectangular | Detailed logos and larger identifiers | £39.99 | Personalise→ |
| COLOP Printer C60 | 77 x 36mm | Rectangular | Largest rectangular marks and detailed layouts | £44.99 | Personalise→ |
| COLOP Printer Q30 | 30 x 30mm | Square | Compact square logos, symbols and seals | £24.99 | Personalise→ |
| COLOP Printer Q43 | 43 x 43mm | Square | Larger badges, seals and square logos | £35.99 | Personalise→ |
UV stamp questions
Useful answers before you order
Is UV stamp ink completely invisible?
It is designed to be almost invisible under normal light, but a faint tint can remain depending on the material, lighting and amount of ink transferred. Always test the intended surface first.
Which surfaces work best?
Absorbent matt paper, card and untreated labels normally give the most dependable result. Glossy, coated and non-porous surfaces can smudge or behave unpredictably and should be tested before use.
Do I need a UV torch?
Yes. A suitable ultraviolet light is required to reveal and check the impression.
Can I use my own logo or wording?
Yes. Choose a product and use its personalisation options to upload artwork or add the required wording. Simple, bold designs normally reveal more clearly than very fine detail.
Which size should I choose?
Choose the smallest impression area that keeps every important line and logo detail clear. Square Q models suit badges and balanced marks; rectangular C models suit wording and horizontal logos.
Can the UV ink pad be replaced?
Self-inking pads can be replaced or re-inked with the correct compatible UV product. Contact Stamp Ninja with the exact COLOP model before purchasing ink or a replacement pad.
Not sure which UV stamp size will keep your design clear?
Send the artwork and intended use to Stamp Ninja before ordering. We would rather help you choose correctly than sell you the wrong impression area.