Normal light
The impression is designed to be much less conspicuous than a conventional coloured mark. Complete invisibility is not guaranteed: a faint tint can remain on some materials or in some lighting.
Stamp Ninja
UV Security Stamp Ink, 10ml, 30ml, 50ml or 100ml
UV Security Stamp Ink, 10ml, 30ml, 50ml or 100ml
Regular price
£19.99 GBP
Regular price
Sale price
£19.99 GBP
Taxes included.
Shipping calculated at checkout.
Quantity
Couldn't load pickup availability
Discreet marking, revealed on demand. Fluorescent UV security stamp ink that stays low-key in ordinary light and shows up under a suitable UV or blacklight.
- Bottle sizes: 10ml, 30ml, 50ml or 100ml. 30ml suits lighter use, 50ml regular use and 100ml frequent or higher-volume use. Choose yours above.
- Use with: Suitable rubber stamps and compatible stamp pads. A clean or dedicated pad gives the cleanest result, as leftover coloured ink can affect the UV ink.
- Good to know: The mark is low-visibility in ordinary light, but complete invisibility can't be guaranteed. Results vary with the material, lighting, amount of ink and UV source, so test first. A UV torch or lamp isn't included.
- Who it's for: Anyone who needs discreet security marking on property or documents
- Same-day dispatch: order before 2pm Monday to Friday and we dispatch the same day.
- VAT invoice: sent automatically in your order confirmation email.
Specialist UV-reactive marking
UV Security Ink — 50ml
For suitable rubber stamps, compatible pads and stamping equipment. Almost invisible in ordinary light, the impression fluoresces under suitable UV light; results vary by surface and ink quantity.
A useful middle-ground size for regular UV marking and routine pad replenishment.
Your selection
50ml bottleRegular use
£19.99 GBPAvailable
What to expect from the mark
The same UV ink can look different depending on the material being marked, the amount of ink applied and the light around it.
Under suitable UV light
The fluorescent ink becomes much easier to see when illuminated with a suitable UV or blacklight source. A darker environment can make the effect easier to view.
Fluorescent UV responseChoose the practical bottle size
Choose according to how frequently you replenish compatible pads. Your selected size is highlighted below; use the product options above to change it.
10ml
Testing & very occasional use
A compact quantity for initial testing, occasional marking or customers who only need to replenish a compatible pad infrequently.
30ml
Light or occasional use
A practical option for customers using UV ink occasionally or maintaining a smaller number of compatible pads.
50ml
Regular use
A useful middle-ground size for regular UV marking and routine pad replenishment.
100ml
Frequent use
The larger option for customers using UV ink regularly or replenishing compatible pads more frequently.
Set up suitable equipment
UV ink is not automatically suitable for every stamp, cartridge or surface. A clean, dedicated compatible pad gives you the best starting point.
Use a new dry pad
A new dry pad avoids contamination from ordinary coloured ink and gives you a controlled starting point.
Apply ink gradually
Add a small amount evenly, allow it to distribute through the pad and make a test impression. Avoid saturating the pad.
Check under UV light
A suitable UV torch or lamp is needed to check fluorescence. Ambient light and the UV source both affect what you see.
Where UV marking can help
These are practical examples rather than guarantees of suitability or approval for a particular process.
Identification
Security marking, document identification, packaging references, stock and inventory marks.
Access and events
Event admission or re-entry, membership and access applications where the chosen surface and checking process have been tested.
Internal control
Inspection marks, discreet references and internal process identification.
Start with the surface
Absorbent matt paper, untreated card and paper labels are useful starting points. Always test the material you intend to mark.
Check the full result
Let a test impression dry, inspect it in ordinary light and under your UV light, then check for smearing or rubbing. Short wording, simple symbols and clear batch references are easier to assess than dense artwork.
Coated and non-porous materials
Glossy, coated or laminated stock, plastic, glass and metal can behave unpredictably. Do not assume suitability: test the exact surface and ask about compatibility before relying on the impression.
Important: Results can vary by surface. Porous and non-porous materials can behave differently, so test uncertain materials first. UV ink is not guaranteed to be completely invisible in every lighting condition, and a UV torch or lamp is not included unless this product listing specifically says so.
Stamp Ninja support
Useful, practical help from a UK stamp maker—before you buy and when you are setting up a new marking process.
Stamps produced across personalised, business and specialist ranges.
Stamp production and customer support from Blackburn, UK.
Ask Stamp Ninja about compatibility before using an unfamiliar pad or surface.
Useful UV marking guidance
Take the uncertainty out of choosing, setting up and using UV ink.
How UV ink worksRead the dedicated guide to discreet UV impressions, viewing them under UV light and testing the intended surface.Read the UV ink guide
Choosing the right ink systemUnderstand the role of a suitable rubber stamp, ink pad and surface before you commit to a marking process.Read the Stamp Ink Guide
Start with a clean ink padA fresh or dedicated compatible pad helps avoid contamination from ordinary coloured ink and gives you a controlled starting point.Browse replacement ink pads
Need compatibility advice?Not sure whether your existing stamp or pad is suitable? Tell us the model and how you plan to use it for practical guidance.Ask Stamp Ninja
UV ink questions
What bottle sizes are available?
10ml, 30ml, 50ml and 100ml. Current availability is shown by the product options and your selection above.
Which bottle size should I choose?
- 10ml: A compact quantity for initial testing, occasional marking or customers who only need to replenish a compatible pad infrequently.
- 30ml: A practical option for customers using UV ink occasionally or maintaining a smaller number of compatible pads.
- 50ml: A useful middle-ground size for regular UV marking and routine pad replenishment.
- 100ml: The larger option for customers using UV ink regularly or replenishing compatible pads more frequently.
Is UV ink completely invisible?
No. The mark is intended to be almost invisible in ordinary light, but a faint tint can remain. Material, lighting and the amount of ink affect the result.
Do I need a UV light?
Yes. Use a suitable UV torch or lamp to reveal and inspect the impression. A UV light is not included unless the product listing specifically says so.
Should I use a clean pad?
Use a clean or dedicated compatible pad. Residual coloured ink can affect the result. Add small amounts evenly, allow the ink to distribute and test before replenishing further.
Can I use it on any surface or on skin?
No. Test the intended surface and equipment. Do not use on skin or for food-contact applications unless the exact ink is expressly approved for that use.
Can Stamp Ninja advise on compatibility?
Contact Stamp Ninja with your stamp model, pad and intended surface for practical guidance.
Complete your UV marking setup
UV Security Stamp Ink is for customers who already have suitable stamping equipment. Choose a ready-to-use UV security stamp if you also need the stamp itself.
