ND R@ 1 Pint Pigment Black Refill Ink for PGI-225 PGI-220 PGI-5 BCI-3eBK ... ink cartridge and CISS. The item with ND Logo! Multiple refills offer a low-cost alternative to high-priced cartridges. Particles: &lt;0.5 micron (Average&lt;100 nanometer); This ink will not fade before 3 years posting outdoor and 200 years in album Temperature: -12C no frozen and 50C no gelling; Waterfastness: 5 (Excellent); Gasfastness: 5 (Excellent); Rubfastness: 5 (Excellent)