Process colour measurements of liquids are a vital part of many operations where precise process control and high product quality standards are desired.
Color measurements are commonly used for number of reasons, including:
* color addition control
* color removal control -
* color avoidance -
* dilution and dosing control
* quality assurance & control
Some common color scales used in the chemistry industry include:
Hazen (APHA) is a measure of yellowness originally designed to evaluate the color
Iodine color ranges from yellow to brown defined by specified dilutions of an iodine solution. Used for solvents, plastics, resins, oils and fatty acids.
Saybolt (ASTM) covers the determination of the color of refined oils such as undyed motor and aviation gasoline, jet propulsion fuels, naphthas and kerosene, and, in addition, petroleum waxes and pharmaceutical white oils.
A Kemtrak DCP007 in-
The Kemtrak DCP007 photometer uses an absorbing wavelength to measure minute color
changes in the process medium, while a second reference wavelength that is not absorbed
by the process medium compensates for turbidity and/or fouling of the optical windows.
The resulting measurements are very accurate with low drift and long-
|Kemtral TCP007 measurement principle|
|Kemtrak TCP007 turbidity meter|
|How it works|
|How it works|
|Food and beverage|
|Pulp and Paper|
|Water and environment|
|water in oil or fuel|
|Colour ASTM saybolt|
|Water in fuel|
|APHA Haze pt-c0|