We are finishing up yellow week with Toucan Primrose. I purchased my sample of ink from Anderson Pens.
Primrose is a very light bright yellow.
Let's take a look at how the ink behaves on fountain pen friendly papers: Rhodia, Tomoe River, and Leuchtturm.
Dry time: 20 seconds
Water resistance: Low
Show through: Low
On 20 pound copy paper the ink behaved well, no issues that I noticed.
Ink swabs for comparison, left to right (top to bottom for mobile RSS): Robert Oster Yellow Sunrise, Toucan Primrose, and Delta Yellow.
I used a medium Pelikan M400 White Tortoise on Tomoe River paper. The ink had an average flow.
Overall, this ink is too light for me to use it as anything but a highlighter ink. It's one of those yellows that hurts your eyes to read it. It's just too light and bright to be easily read. Give it a try, you might love it.
Disclaimer: I purchased this ink myself, and all photos and opinions are my own. There are no affiliate links on this page.