In this recent thread we discussed how you need a scale that reaches 150 or 170 to dial in Magenta for high grades - use the most you can get. OP in this thread could only go up to 100.

http://www.apug.org/forums/forum41/1...e-paper-2.html

I don't exactly know how to measure the density of a magenta filter, but I took a #4 filter and put it under the green dot on my densitometer, it measured over 2.50

So I think a CC 100 Magenta would be awesome to add...

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I also think this may be a matter of interpretation. The standards are based on a specific range, somewhere like 4 to 96%... and mcilroy, you're using eyeball to interpret. So you could be counting a higher number than technically getting.