This allows us to assure you that the luminous performance of our paints is maintained night after night. Since September 2018, we have been performing quality surveys and luminescence measurements on the first track implemented in Pessac. 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). 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. We carry out quality controls at all stages of production and characterize each batch before shipping. 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.Īll of our LuminoKrom® photoluminescent paints are produced at our OliKrom industrial site in Pessac (33), France. 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. 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. 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). 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.
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