ASTM-E1477 requires the user to calculate Y from a measurement using an integrating sphere instrument and including the specular component.
ASTM C609 recommends the user calculate Y or L* from a specular-included measurement, but allows the user to do a specular-excluded measurement if they clearly mark that those results as being specular- excluded.
HunterLab ColorQuest XE, UltraScan Vis and UltraScan Pro and MiniScan EZ 4000 series can do specular- included reflectance measurements.
HunterLab LabScan XE, ColorFlex EZ, D25NC and MiniScan EZ 4500 series can do specular-excluded measurements.
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