The color of powders such as limestone or raw pigment powders are often measured as an incoming QC check to ensure lot-to-lot consistency of raw materials, and to ensure color accuracy of the final product, such as cosmetic facial powder or baking powder.
The preferred method for measuring powders is to use a Directional 45°/0° reflectance geometry for its ability to measure color the way the human eye 'sees' color. This is the geometry that is recommended by HunterLab for color measurement of opaque materials that will be viewed by the customer.
Most HunterLab spectrophotometers have the versatility to accommodate most applications of color measurement. However, based on 60+ years of experience and a thorough understanding of our customers' needs and product use, these particular instruments are most suited for this industries application
If you are unsure which instrument type is right for your samples, please call or email HunterLab technical support and we will be happy to assist you in making the proper instrument selection.
AN 1002.01 Standard Observer
CIE Standard Observers and calculation of CIE X, Y, Z color values.AN 1003.01 Small Samples
Color Measurement on Very Small SamplesAN 1004.01 Gardner Index
Measuring Degrees of Yellowness with Gardner Index.AN 1005 HunterLab vs CIE Lab
Measuring Color using Hunter L, a, b vs CIE 1976 L*a*b*.AN 1013 Averaging
Averaging in Color Measurement.AN 1018 Hitch Stdz
Using Hitch Standardization on a Series of Color Measuring Instruments.AN 1031 Identification of Measurement Parameters
Identification of Measurement Parameters.AN 1033 Color versus Appearance
Understanding the difference between measuring color and measuring appearance.HunterLab Solution Matrix
Geometry, Measurement Modes, and Indices.MM 5014 Measuring Loose Powder with ColorQuest XE
Measurement method for loose powder using the ColorQuest XE, UltraScan VIS, or UltraScan PRO.MM 5039 Measuring Loose Powder with UltraScan VIS
Measurement method for loose powder using the ColorQuest XE, UltraScan VIS, or UltraScan PRO.MM 5064 Measuring Loose Powder with UltraScan PRO
Measurement method for loose powder using the ColorQuest XE, UltraScan VIS, or UltraScan PRO.MM 5100 Measuring Loose Powder with ColorFlex EZ
Measurement method for loose powder with ColorFlex EZ.