ink cartridges

I searched around in the resources, but didn't find anything about ink. If I missed something there, please let me know below. If not, maybe we can put together something for the resources section? There are a few individual threads for specific refill types. I'm mostly interested in the...

I am selling the slimline, trimline, comfort & designer pens and I have had people ask me what kind of refills do they take. I don't want to buy refills from PSI or some other site and have to pay the shipping just for some refills. Can anybody out there tell me what refills they take. I have...

I've been having problems with the ink on the teachers pen kits. I had some that were on the shelf for several months and when I put them together the red ink didn't work. I bought some new ones and had the same problems. Red and Black ink didn't work very well from the new batch. I would...