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
HunterLab manufactures, directional 45/0 instruments and also diffuse sphere instruments, with diffuse/8˚ geometry. The UltraScan PRO, UltraScan VIS, ColorQuest XE, and ColorQuest XT are all bench top sphere instruments available from HunterLab. Continue reading
FAQ: ASTM D6290 recommends that I measure my plastic pellets for yellowness using the specular exclude mode. What is this?
How can HunterLab instruments measure products of small quantities or small volumes?
In these instances it is important to use the smallest amount of sample for color measurement. HunterLab has a wide variety of solutions to accurately and consistently measure the color of small samples including solids, powders, and liquids. The challenge is being able to measure the small samples in a way that provides an accurate and repeatable measurement for the customer. This is achieved through the use of special instrument accessories. Continue reading
FAQ: “More customers are asking us about Chinese Pharmacopeia Numbers… is this similar to EP/USP Color?