Tints

[Thumper]

We are having trouble locating dye tints that give true black/gray and browns.
Can anyone suggest true color tints that resist fading in the tint units and/or tips on maintaing true colors longer?
Thank you.

[Joann Raytar]

We have had our best luck with BPI Molecular Catalytic Black. It lasts the longest but does still fade. Have you tried "Red Out?"
http://www.callbpi.com/catalog/chems/ch4_tchm.html

[JRS]

Typically, the problem is not with the dye (provided its good quality); it is in the temperature of the dye in use. It needs to be close to 205 degrees. Tank temperatures around 180 degrees will produce 'grey' lenses with a reddish color. And it is not the fault of the dye, unless diluted or wore out.

[HenryB]

Take a look in the "downloads" section, there is some great info there on tinting.