Full details are in reports on their site. Their tests result in 'megalux hours' ratings, a measure of how much light the print can stand to receive before perceptively annoying fading. has studies of both Precision Colors and Canon inks that show the scientifically tested differences in light fading between the two. Precision Colors is mentioned here often.
This is the sad fact of life in the inkjet printing market: You Get What You Pay For. Can any of you recommend a third party supplier whose inks do not fade and are archival? They were kept in regular room light and not in direct sunlight. What I've noticed lately is that there has been fading on some of the prints that were not very old (less than a year). The sellers all have very high positive responses in the tens of thousands. I'm using a Canon Pixma Pro 100 printer and due to the cost of original Canon ink cartridges CLI42 I've been buying third party suppliers on Ebay.
