ND Brand Dinsink: 10OZ Black Pigment Ink for Epson 676 T676 T676XL Workforce WP-4020 WP-4530 WP-4540 WP-4010 WP-4023 WP-4090 WP-4520 WP-4533 WP-4590 The item with ND Logo! *Warning: Cannnot use for Epson OEM cartridge! Easy refilling! Big saving! Stability: No setting in 3 years (at normal storage) Temperature: -12C no frozen and 50C no gelling; Waterfastness: 5 (Excellent); Gasfastness: 5 (Excellent); Rubfastness: 5 (Excellent)