Pilot� Ballpoint Pen Refills, Fits Dr. Grip & All Pilot� Retractable Ballpoint Pens, Medium Point, 1.0 mm, Blue, Pack Of 2
good to the last drop ink
This is the only pen ink I've found in over 40 years of writing that uses up all of the ink. The pen will write lighter when the ink is nearly out, giving you time to stash a new refill nearby. When the ink runs out, you know there's no ink left. Great value for the money. The ink will run if the paper accidentally gets wet, so you do have to be a little careful, but paper and liquids shouldn't really be around each other.
June 25, 2012
Great Oil-based Ink
This ink is oil-based and will not run if water comes in contact with the dried ink on paper. (I've yet to find a gel ink that is waterproof.) I think the blue ink flows better than the black. The blue ink is also much easier to see on a printed page if you are using the pen to mark corrections.
I use these refills in the Dr. Grip pen and the Dr. Grip Center of Gravity pen. Great ink.
December 3, 2009