How is ASTM D1003 Transmission Haze measured at levels > 30%?
Posted on by Ken Phillips
FAQ: “We have a scientist here who is looking at films containing small bubbles and attempting to do measure them by measuring Haze% on a HunterLab spectrophotometer. I suspect her problem in obtaining numbers that “make sense” from what you get from just eyeballing the samples (and trying to look through them at the outlines […]
Measuring the Color of Clear Liquids
Posted on by Ken Phillips
One application that often comes up is measuring the color of clean liquids such as the fragrance sample seen above. This liquid fragrances is clear and looks almost like water. Fragrances such as this are often added to cleaning supplies, air fresheners, or other consumer products. One of the problems that this type of sample […]
Do you know of an independent test lab that can measure APHA/Pt-Co/Hazen Color?
Posted on by Ken Phillips
Contact the following and ask for “APHA/Pt-Co/Hazen Color testing per ASTM D1209 and D5386″. 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 […]
Do you have a source for liquid Saybolt and ASTM D1500 Color Standards?
Posted on by Ken Phillips
These liquid visual color standards can be used as an independent test to verify instrumental Saybolt and ASTM D1500 Color measurement performance over time for these two visual color scales used to evaluate oil, oil additive and petrochemical color quality. Ken PhillipsMr. Philips has spent the last 30 years in product development and management, technical […]
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 […]