I have two pens inked, one with Noodlers Aircorp, the other with Noodlers Blue-Black. If I make a mistake and add Aircorp to the converter with Blue-Black in it, is there any negative consequence to worry about? Or are problems limited to mixing bulletproof/non-bulletproof, and inks of different manufacturers? thanks.

John

I'm not an expert on this, but I've been doing some research in preparation to give a few mixes a whirl. It seems most inks can be mixed without causing problems. The exceptions I've heard about are Noodler's Iraqi Indigo with PR Tanzanie (if I remember correctly) and three PR inks that shouldn't be mixed with any other ink: Candy Apple Red, Tangerine Dream, and Hot Bubble Gum.

Even though most ink mixes seem benign it's advisable to mix a small batch and let it sit for a day or so to see if it turns bad (gums up, lots of particulate, etc.)

I doubt you'll have any trouble with Aircorp and Blue-Black mixed in the converter, but if it's a particularly valuable pen you may want to flush it out just to be extra safe.