My Ready Reserve
I have been using Pilot cartridges off and on for the last 10-12 years. I primarily use them whenever it isn't convenient to take along a bottle of ink. It has been 5 or 6 years since my prior purchase of Pilot cartridges. I am using the next to last one from the previous purchase. Naturally, there has been some loss of volume (about 1/4 inch) in a cartridge that old and the ink consistency has changed a touch. Nevertheless, the ink still flows beautifully through both my Namiki and Pilot Falcons. I don't expect this batch of cartridges to sit in their box anywhere near as long as the previous ones did. I really like the Pilot ink.