How do you measure the color of bare metal materials?
Bare Metal Brass Disks
Bare metal with a brightened, polished surface showing both color and gloss characteristics in the specular reflectance with a rapid fall-off to near black at the aspecular angles.

Bare metals are classified as opaque metals and do not allow any light to pass through them. In opaque metals, the specular reflection and diffuse reflection are key to defining the light interaction of this unique sample type. For bare metals both color and gloss are seen in the specular reflection which makes up a large portion of the reflection. Continue reading

When do I use Specular Exclusion in Color Measurement?

FAQ: ASTM D6290 recommends that I measure my plastic pellets for yellowness using the specular exclude mode. What is this?

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What mode am I in and how do I change modes?

How do I know what mode my sensor is currently standardized in and how can I change modes?

The easiest way to tell what mode the instrument is using in the EasyMatch QC software is to locate the status bar in EasyMatch QC. The status bar is located at the very bottom of the software indicated in red in the picture below. This provides information about the sensor in the current mode, and when the standardization for that mode expires.

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