replace 11 year old Color Checker Passport?

[kers]

This topic is about a colorchecker card, right?
I am not interested in who (dis)likes who...

[digitaldog]

This topic is about a colorchecker card, right?

Yes, at least it started that way until Reply #4 where massive assumptions on the topic developed.
There are a number of ways to verify the  ColorChecker, the best way you specified in post #3 before the topic when off the rails.
Further, there's a great wealth of information about it here:
http://www.babelcolor.com/colorchecker.htm
The part about "New color specifications since November 2014" is notable.

[Eric Brody]

I'm the OP, thanks Kers, I'm with you. This ad hominem stuff does not belong here or anywhere else on this usually helpful forum.

Thanks Andrew for getting back to the original question. I'll check out the reference you cited.

Eric

[Doug Gray]

I've found the various ColorChecker cards to be reasonably stable over time. The biggest problem I have using them is that the spectral response differs on some colors from that of CYMK printers. In particular A2, A3, and F2 (Orange, Blue, and Orange-Yellow). These are the colors I see the most metameric failure on with cameras and scanners. Haven't really had much of an issue with change over time with any GMB or XRite Colorcheckers. They have been quite stable.