PURPOSE
To ensure that a product will keep its colour when exposed to light during normal use.
EQUIPMENT
• 160 W UV lamp
• Incline plane (fixed or adjustable) with an angle of 45° from a horizontal level
• Grey scale for assessing change in colour (ISO 105-A02)
TEST SPECIMEN
All different colours need to be tested.
Minimum 2 samples have to be tested.
METHOD
1. Place the product on the incline plane. If the product cannot stand alone on the incline plane please use anything as support so the product can be standing on the plane.
2. Place the lamp right over the product at a distance of 40 cm. See picture below.
RESULTS
The colour change is assessed in light box (D65 light) using the grey scale for change in colour. No candle shall exceed the given requirements.
To ensure that a product will keep its colour when exposed to light during normal use.
EQUIPMENT
• 160 W UV lamp
• Incline plane (fixed or adjustable) with an angle of 45° from a horizontal level
• Grey scale for assessing change in colour (ISO 105-A02)
TEST SPECIMEN
All different colours need to be tested.
Minimum 2 samples have to be tested.
METHOD
1. Place the product on the incline plane. If the product cannot stand alone on the incline plane please use anything as support so the product can be standing on the plane.
2. Place the lamp right over the product at a distance of 40 cm. See picture below.
3. Let the product be exposed for 48 hours.
4. Check the colour change. RESULTS
The colour change is assessed in light box (D65 light) using the grey scale for change in colour. No candle shall exceed the given requirements.
