DIN 67510-1 Phosphorescent Pigments and Products - Part 1: Measurement and Marking at the Manufacturer

Material Testing

DIN 67510-1 Phosphorescent Pigments and Products - Part 1: Measurement and Marking at the Manufacturer

Developed by the German Institute for Standardization (DIN), this part of the DIN 67510 standard defines the requirements for the evaluation of long-lasting pigments and products and specifies how to measure and mark them.

DIN 67510-1 Phosphorescent Pigments and Products - Part 1: Measurement and Marking at the Manufacturer

Energy-saving surface treatment for materials is very important and has been extensively researched in recent years. In this study, phosphorescent pigment application was used in vitrified glazes. The use of phosphorescent pigments and glazes ensures high quality and at the same time attracts the attention of the customer. In this study, the produced phosphorescent pigment was added to the vitrified glaze frit in certain proportions.

After the vitrified bodies were glazed, the compositions were fired in industrial furnaces.
Compared to standard vitrified glaze, homogeneous and long-lasting surfaces were obtained. Pigment crystallinity and microstructure were evaluated by X-ray diffraction (XRD) and scanning electron microscopy (SEM-EDS), respectively. The results show that the new phosphorescence glaze samples exhibited satisfactory luminous power with the addition of 10% pigment.

DIN 67510-1 Test Procedure

A filtered 150 W xenon lamp at 1000 lux for a period of 5 minutes
is exposed. The illumination in the measuring plane is measured with a luxmeter, Hagner, Model S2. After 5 minutes the xenon lamp is turned off and a gloss meter, Hagner ERP-105 connected to a PC-computer records the brightness every minute for two hours. The measuring aperture corresponds to a measuring point of approx. Ø 45 mm. The sample is kept under dark conditions for at least 48 hours before excitation.

A spectrophotometer, Photo Research PR-705, is used to determine color during excitation and attenuation. Stimulation is made with the D65 light source at 1000 lux for 5 minutes and attenuation color measurement starts approximately 15 seconds after the lamp is turned off.

the reported expanded uncertainty of measurement is expressed as the standard uncertainty of measurement multiplied by the coverage factor k = 2; this corresponds to a coverage probability of about 95% for a normal distribution. The standard uncertainty was determined according to EA Publication EA-4/02 (formerly EAL-R2). The long-term stability of the calibrated object is not included in the reported expanded uncertainty of measurement.

Among the services provided by our organization within the framework of material testing services, there are also DIN 67510-1 standard tests. Do not hesitate to contact EUROLAB laboratory for your test and certification requests.

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