Question: ASTM D6290 - Which HunterLab Instruments comply?
The following HunterLab instruments conform to the following D6290 Groups
Group I = Agera with Large Area of View (LAV) port plate or LAV sample cup port plate
Group II = ColorFlex EZ only with sample cup port plate
Group IV = UltraScan Vis/UltraScan Pro with LAV Port Plate and Specular-Exclusion (SPEX). It is recommended that the reflectance shelf be used.
Note: that for supplier/customer comparisons and approvals it is recommended that only like groups are compared. For example do not compare or use a Group IV standard value or tolerances with a Group I or Group II instrument. Also note that the D25LT conforms to Group II and as of 2016 was still being used by several companies.
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