I had not heard of it being mentioned elsewhere, but having the name, I could then search and find it mentioned frequently on FPN. I decided to check into it a little further. I saw it was being sold at Blick's Art Supply here. A quick call to Nibs.com told me they were somewhat familiar with it, but recommended cleaning dried ink with a 1/2 cap of ammonia in a cup of cool water, drawing up for 20 mins, then ejecting and rinsing. Never use warm/hot water or alcohol which can damage the feed. Ammonia is NH3, and when added to water, becomes Ammonium Hydroxide which is a base (vs. an acid)
I clicked on the MSDS link for Koh-I-Noor, they have shown here, it has:
I like to check a bit more than most people when a suggestion is made, and everyone just assumes the person telling them was automatically right, so I looked up the Koh-I-noor company which is based in Czechoslovakia here. I don't speak Czech, so I went back to the MSDS which revealed that it is manufactured by a MA company called Chartpak Inc!, so I called them (1-800-628-1910). They said they bought out Koh-I-noor (maybe worldwide, or maybe just their USA presence?), and they do make the cleaner in their lab. I asked to speak with their technical adviser, whose name was Barb Willard (x460). She confirmed that they mix up the product in their lab, and she works directly with them doing it.
<1% Potassium Hydroxide
She said it was completely safe for use in all fountain pens & feeds, and said it seems to work well even if dilluted with cool water 1:4.
Potassium Hydroxide (KOH) (like Ammonia) is also a strong base. Triethanolamine is also a base, but seems to be used as a surfactant/emulsifier agent.
So, I can see this may work a little differently than just some Ammonia in water. I wonder if it is similar to adding a few drops of dishwashing liquid to a dilute ammonia solution. I'm not as afraid of using it after doing this research and talking to Barb Weller.
Edited by SamCapote, 30 April 2010 - 19:58.