Blogs
How do you measure the color of bare metal materials?
Posted on by Ken Phillips
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 […]
Diffuse Sphere Instruments
Posted on by Ken Phillips
HunterLab manufactures, directional 45/0 instruments and also diffuse sphere instruments, with diffuse/8˚ geometry. The UltraScan PRO, UltraScan VIS and Vista are all bench top sphere instruments available from HunterLab. Ken PhillipsMr. Philips has spent the last 30 years in product development and management, technical sales, marketing, and business development in several industries. Today, he is […]
When do I use Specular Exclusion in Color Measurement?
Posted on by Ken Phillips
FAQ: ASTM D6290 recommends that I measure my plastic pellets for yellowness using the specular exclude mode. What is this? Ken PhillipsMr. Philips has spent the last 30 years in product development and management, technical sales, marketing, and business development in several industries. Today, he is the global market development manager for HunterLab, focused on […]
What is the CP – Chinese Pharmacopeia Color Scale?
Posted on by Ken Phillips
FAQ: “More customers are asking us about Chinese Pharmacopeia Numbers… is this similar to EP/USP Color? Ken PhillipsMr. Philips has spent the last 30 years in product development and management, technical sales, marketing, and business development in several industries. Today, he is the global market development manager for HunterLab, focused on understanding customer needs, providing […]
How is polarization minimized in HunterLab sphere instruments?
Posted on by Ken Phillips
FAQ: “Do you sell a depolarizer for my HunterLab sphere instrument? On occasion we test polarized samples and there is definitely a dependence on the orientation of the lens. I was wondering if adding a depolarizer would eliminate this phenomenon?” Ken PhillipsMr. Philips has spent the last 30 years in product development and management, technical […]
What tolerance should be used for a PQ Performance Qualification on Transmission Color Measurements?
Posted on by Ken Phillips
FAQ: “What is the limit on the standardization in TTRAN. Using the small sample flask, filled with Ultra pure water. If they follow the protocol, they expect to find values (CieLab: 100.0; 0.0; 0.0)?” Ken PhillipsMr. Philips has spent the last 30 years in product development and management, technical sales, marketing, and business development in […]
Does the White Tile stay at the Reflectance Port during Transmission Readings?
Posted on by Ken Phillips
FAQ: “Do we have to keep the white tile at the reflectance port during transmission readings?” Ken PhillipsMr. Philips has spent the last 30 years in product development and management, technical sales, marketing, and business development in several industries. Today, he is the global market development manager for HunterLab, focused on understanding customer needs, providing […]
Do you have a source for Transparent Liquid Haze Standards?
Posted on by Ken Phillips
HunterLab Distributor FAQ: “I have a new pharma customer doing color measurements. They also want to do haze measurements and we had a discussion about haze standards. Would our plastic haze standards be fine or is there a liquid haze standard out there?” Ken PhillipsMr. Philips has spent the last 30 years in product development […]
What is a visual limit for Haze%?
Posted on by Ken Phillips
FAQ: “What is a visual limit for Haze%? When should I be able to see a difference in a sample?” A perfect clear of 0% would be air for transparent solids and the transmission cell of a defined path length filled with DI water for transparent liquids. It should also be noted that the Haze% […]
Can HunterLab instruments measure APHA/Pt-Co/Hazen Color above 500?
Posted on by Ken Phillips
Ken PhillipsMr. Philips has spent the last 30 years in product development and management, technical sales, marketing, and business development in several industries. Today, he is the global market development manager for HunterLab, focused on understanding customer needs, providing appropriate solutions and education, and helping to solve customer color challenges across these industries and cultures.
What is the technique for quantifying reflected color in architectural glass?
Posted on by Ken Phillips
In the two glass window panes above you can probably notice a difference in the transmission color between the two. The one on the left appears greener while the one on the right appears bluer. There is another difference; the two samples have a difference in reflectance as well. The sample on the left has […]