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Lovibond Daylight 2000 Lighting Unit |
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Used Analytical Instruments
Lovibond® Daylight 2000 Lighting Unit with Nessleriser 2150
Standardised Lighting in Visual Colour Grading
To guarantee consistent and accurate readings when using Lovibond® test discs for
colour grading, it is important to use a constant and stable light source for obtaining a colour match between the sample and the glasses. Good Northern daylight (Southern daylight in the Southern hemisphere) is the optimum natural lighting for colour matching although users should be aware of the pitfalls associated with using daylight - it will vary according to the time of day, the weather, the season and where you are. Artificial lighting (such as fluorescent laboratory lights) should not be used as a light source for colour matching as it has different characteristics that may affect the results obtained (the light source may influence the transmission of light through the sample and through glass in different ways eg. when using the test disc for measuring the haemoglobin content of blood, a fluorescent light source gives results which are different to those obtained with Northern daylight).
Only by using a Lovibond® standardised lighting unit is it possible to guarantee uniform lighting conditions for colour matching 24 hours a day and irrespective of ambient lighting. For certain tests where discrimination between adjacent glasses is relatively difficult, Tintometer would always recommend the use of a standardised light source:
• Where there is not much colour in the sample (for example, measurement at the low end of the Platinum-Cobalt/Hazen colour scale).
• With dark samples where relatively little light is transmitted through the glasses and the sample.
• Where there is not a great difference between the colour of adjacent glasses.
Lovibond® Daylight 2000 Lighting Unit
A standardised bench-top light source that guarantees constant and uniform lighting conditions for colour matching. For use with the Lovibond® Comparator 2000+, Nessleriser 2150,
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