Inks not to mix.

[Pharmasweaves]

So I went to clean out my pen and i had about 0.5 mL left of a few inks, so I thought i would mix a couple while i cleaned out my pen, and then fill it with the mixture to see how it turned out. So I mix the inks, pull out the syringe to draw up the ink, and nothing's coming up. I go to check the tip, and the inks had made a giant clump, Lucky for my I had decided to mix them in the vial before putting it into my pen. :-X

So I went on here to see what else never to mix, but there's not already a listing (that I could find).

So here's the first (of I'm sure, many) combinations of inks never to mix.

Private Reserve - Ebony Blue
Noodler's - Qin Shi Huang Red

It also left a hard layer of precipitate in the bottom of the vial, so I went ahead and just tossed it out.

[Pilotman49]

When I mix inks I'm not sure of, I mix them in a sample vial, leave them for a couple of days. Then check, ink before putting in my pen, to make sure there are no lumps, etc.