Digital BW, The Print

Hi,

I’ve been mixing my own inks for a few years, generally with distilled water, PhotoFlo and glycerine (plus a full strength pigment in the appropriate ratio).  Problem I have is mold growth. Glycerine is edible, especially when diluted, and without something to suppress growth, I get cruft in my ink tanks and probably up in my printheads.  Usually I can blow it out with patience but I’d rather just have something that doesn’t support life.

Any thoughts on either an additive or replacement for glycerine to get the right viscosity?  I’m otherwise very happy with the results.

Thanks.

-s