For those who are looking for a source for the Pilot SCA-UF Permanent Markers that we all like so much for marking our cartridges, Pilot now has an online store:
The pens are $1.59 each and there does not appear to be a minimum order, but minimum shipping cost is $3.95 for orders up to $14.99. Go here for shipping information.
For those not familiar with this pen, it is, in my opinion, the best pen type for marking cartridges. I have used them for almost 40 years and have never had a problem. The writing is easily removed with Acetone and even after being on a cartridge for 30+ years it leaves no marking behind.
Unlike the other brands of so-called “Perminent” fine point markers, the Pilot will not rub off or smudge with handling.