Certified luminescence duration of +10 hours
LuminoKrom® is the only photoluminescent paint on the market that has a certified luminescence level of class G according to the international standard ISO 17398.
This performance ensures a visibility time of 10 hours in the dark!
The exceptional photoluminescence values of LuminoKrom® paints have been certified by an external optical metrology organization accredited by COFRAC.
LuminoKrom® : an exceptional persistence time
LuminoKrom® paint is the result of several years of research and development. The challenge was to work on pigments and a formulation that would give the paint sufficient light emission capacity to provide lasting guidance for users at night.
In 2018, the almond green LuminoKrom® paint was born, whose light emissions are visible for 10 hours in the dark. A duration of luminescence never achieved for a luminescent coating.
Are all luminescent road paints the same?
Beware, not all luminescent road paints on the market have the same performance!
LuminoKrom® is the only photoluminescent paint that glows for 10 hours (class G).
Other offers exist on the market from different suppliers but the luminescence duration is 2 to 3 hours (class B/C/D). In this case, the maintenance of visibility for road use is extremely limited.
Are you looking for 10 hours of visibility?
- Ask for a paint with a certified luminescence level according to the international standard ISO 17398.
- Check that the luminescence is class G.
The ISO 17398 standard: the only objective and measurable criterion to express a visibility time in a specification
There is a normative reference to measure and guarantee the luminescence levels of luminescent coatings: it is the CE ISO 17398 standard “Safety colors and safety signals” which classifies products according to their luminescence emission measured in millicandela/m².
It proposes a classification according to the performance and the durability of the products, on a scale increasing from A to G according to the level of the measured luminescence (intensity and duration). The table opposite shows the class of products according to their level of emission measured after 2 min, 10 min, 30 min and 1 hour of darkness.
These measurements allow to draw the emission curve of a coating and to anticipate the passage of the emissions under the 8 millicandela/m², level which can be estimated as the limit of visibility of the paints in the darkness in outside environment.
Only the measurement of luminescence is intangible, hence the importance of referring to this standard CE ISO 17398 in a specification, indicating the minimum class expected for a luminescent product, class certified by an accredited laboratory.
Quality control of our luminescent road paints
All of our LuminoKrom® photoluminescent paints are produced at our OliKrom industrial site in Pessac (33), France.
We carry out quality controls at all stages of production and characterize each batch before shipping. All our LuminoKrom® products are characterized according to the ISO 17398 and NFX 08-050-1 standards and certified by an external optical metrology organization accredited by COFRAC. The luminescent performances are measured over more than 10 hours, noting the intensities at 2 min, 10 min, 30 min and then 60 min (after an excitation phase according to a reference lighting of 1000 lux) and the extinction time (in minutes).
Since September 2018, we have been performing quality surveys and luminescence measurements on the first track implemented in Pessac. This allows us to assure you that the luminous performance of our paints is maintained night after night. And the 80 projects carried out by the end of 2021 on the whole French territory are witnesses of the good maintenance of LuminoKrom® paints in real conditions on existing runways.