what kind of ink would make this clog?

Today I recieved part of an order from pear tree pens, a
sampler pack of diamine inks. I tried the jade green and it
came out looking like pond scum.

I had flushed the snorkel after intially testing it with black
pilot ink...so I figured I did not flush it properly. I do
remember the snorkel working properly when I purchased it. One
could use it like a ink filling syringe. Today, it wouldn't
work at all.

I put the pen underwater and started working the piston, black
sheets of something came out followed by some geasy stick
cranberry colored ink. This cranberry colored stuff came out
like snot from a sneezing cat.

I got the pen working again, and it works like I hear snorkels
are supposed to. BTW, it is filled with diamine orange now.

What brand of ink do you think the cranberry stuff is? It is
greasy, almost like what one would find under an automobile. It
is also very tenacious stuff.

I think it may be one of the pelikan inks...I have heard that
they dry gooey.

matthew