[align:center][/align]Just for fun of it to show color change or not over different base primers. Working today pulled sample from 275 gallon batch to be put into aerosol cans of John Deere green OEM touch up for distribution.
Color sample was sprayed over black and white card cut 20% thinner 2coats approximately 3 mills wet. Color was full hide easy with 2 coats. These are the results and what shows color with full hide will show no difference in base color used.
White card Black card
L. 44.86. L. 44.83
A. -22.17. A -22.22
B. 20.99. B 21.00
Much of this is Greek to most if not all people if not in the paint or coating industries. The above shows on change in color if sprayed over black or white. The delta E number of .06 is not seen by a human eye most people have hard time to see a .25 or less
L. Is Light to Dark
A. Is Red to Green
B. Is Blue to Yellow
The above was read against each other no let’s say it’s used against a standard color and how to utilize and what is done with numbers
Std Trial sample
L. 44.12. L 44.85
A -23.58. A -22.85
B 21.07. B 20.99
L .73 Color is light side
A 1.37 Color is red side
B -08. Color is blue side
E*ab 1.56 color would need to be corrected to a .5 or under Eab
Above numbers give me direction in color and how to move it
It is also a reference batch to batch in what was done and shipped.
In general in industrial paint formulation for me hide hide hide is goal key number one in my book some and many colors can be challenging sometimes not achievable and color selection of primers are very important.