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LUMENTIFY

Knowledge · Purchasing

How to recognise good glow pigments

Updated: 4 min read

At first glance glow pigments often look the same – a light powder. The differences only show in the dark: in brightness, afterglow duration and service life. What buyers and developers should look out for.

Infographic Quality: Price matters. – the cheaper, the weaker the afterglow

Price says a lot about brightness

Whether online or in retail: the price of a glow pigment ultimately says a good deal about its performance. The cheaper the material, the weaker and shorter it usually glows. A conspicuously low price is therefore more of a warning sign than a bargain – at the latest when the finished product disappoints in the dark.

Our approach: the best possible performance at a sensible cost

LUMENTIFY specialises in powerful, long-lasting glow pigments that have proven themselves in industrial use and in end products, both in experience and technically. In brightness and quality we deliberately position ourselves in the upper range – aiming for the best possible performance at a sensible material cost, without the price of the very top special materials.

Even more is possible: around 5 % additional afterglow brightness can be achieved with special materials – but then it becomes considerably more expensive. You can ask us about that too.

Criteria for your purchasing

How to recognise powerful glow pigments
CriterionWhat to look for
Materialeuropium/dysprosium-doped strontium aluminate – the material for a long-lasting afterglow
SurfaceSiO₂ coating for hydrolysis resistance, important in damp environments and water-based systems
Glow colourThe brightest pigments are untinted (natural green, blue-green, blue) and have a light, whitish daylight colour. Strong daylight colours indicate tinting and therefore less brightness.
Particle sizea clear figure in µm that suits the application – coarser glows brighter, finer processes better
Afterglow durationmore than 10 hours in total darkness for the bright pigments
Service lifelow ageing – very little with our pigments
Documentationa complete, current safety data sheet in your language – if it is missing or incomplete, that is a warning sign
Samplingsamples for your own test – a reputable supplier lets you test the material in your own system

The best test: in your own system

Data sheets and photos are a start, but no substitute for a comparison in your application. Charge samples from different suppliers for the same time with the same light source and look at them together in the dark – right after switching off and again after one or two hours. Then you will see which pigment delivers what it promises.

In shortLook at material, daylight colour, particle size and documentation – and be wary of conspicuously cheap offers. In the end, the test in your own system decides.

FAQ

Frequently asked questions

Why are some glow pigments so cheap?
Because they usually glow weaker and shorter. The price of a glow pigment says a lot about its performance – the cheaper, the less brightness.
How do I recognise a strong glow pigment?
By the material (strontium aluminate), a light, whitish daylight colour (untinted), clear particle size information and a complete safety data sheet. The test in your own system is decisive.
Are there even stronger pigments?
Yes, around 5 % more afterglow brightness is possible with special materials – but considerably more expensive. Contact us if you need it.

Request samples for comparison

Guide values are a starting point – the result depends on your system. Send us your carrier material and process, and we will put together suitable samples.

You can also reach us directly: +49 151 55687366 info@lumentify.com