Digital BW, The Print

Pure ammonia should do it.  Flush with water afterwards.

Jerry

k2_chittin wrote:
> 
> I'm switching a used CIS over from Enhanced Generations 4 colour to
> MIS VM with a new set of carts.  Having washed out the old ink with
> warm water, I'm unable to get the "black" tube completely clean.  Has
> anyone who has done something similar been able to completely clean
> their tubes?
> 
> K2
> 
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