QUOTE(vermiculus @ Jul 8 2008, 10:10 PM) [snapback]664040[/snapback]
Let me say this first: If you see this ink on a shop shelf, buy it. You won't be disappointed by the colour.
Having said that, I have heard some people complain of problems with some pens, especially (apparently) the 51 of the same brand. I've tried it in several of my collection and have had no problems so far.
This blue is a wonderful, vibrant colour, with excellent flow, fairly high saturation, and it's great for flexies. Anyway, here's the sample:

Questions and feedback appreciated.
This ink is so hard to find now, the only time I have seen it is in a Portugese stationers and on my Doctors desk!
I have a bottle at home which I am holding onto but I agree, it is an excellent colour.
I must try and blend other inks to get a near match, has anyone tried this?