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Reflectance & Colour Data

All of our un-calibrated standards are provided with nominal data as a guide to the values that may be expected in service.

Where different batches of a given colour exist, we clearly label each batch so that the appropriate data are correctly supplied with each standard. An example of the data provided is that for a Red Tile from Batch G.

Nominal Spectral Reflectance Data,
%, for Sphere Geometry (Spec. Incl.), at 25°C.
380nm 8.7 480nm 8.6 580nm 12.6 680nm 73.6
400nm 8.7 500nm 8.6 600nm 22.5 700nm 76.6
420nm 8.7 520nm 8.8 620nm 46.2 720nm 79.3
440nm 8.7 540nm 9.3 640nm 63.3 740nm 80.0
460nm 8.6 560nm 9.9 660nm 69.7 760nm 80.6


CIEL*a*b* Values for D65/10 Observer
    L*   a*   b*  
Specular Included   46.1   37.0   18.6  
Specular Excluded   36.5   48.3   34.1  


CIEL*a*b* Values for C/2 Observer
0 /45 Geometry   37.0   51.0   36.9  


Colour Variation About the
Master Standard (99% Confidence Limit)
    0.4   0.4   0.6 DE=0.8


Thermochromism for 10°C rise in
temperature, D65/10 Observer, Specular Included
Values -0.37 -0.71 -0.61

Each leaflet includes notes on use and care.
Certificated values for standards can be supplied as part of our Calibration Service.
Next Steps
Applications
Calibration
Care & Measurement Guide
History of Colour Standards
Product Specifications
Reflectance & Colour Data
Thermochromism Data
Uses
Contact
Emma Tang or Carol Baddeley
Tel: +44 (0)845 026 0902
Email: colourstandards@ceram.com
CERAM, Queens Road, Penkhull, Stoke-on-Trent, Staffordshire ST4 7LQ, United Kingdom
Customer Enquiries: +44 (0)845 026 0902   Switchboard: +44 (0)1782 764444
Fax +44 (0)1782 412331   Email: colourstandards@ceram.com
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