5x30ml ND Brand Dinsink Premium UV resistant Dye ink refill kit for Lexmark 36A 37A and Lexmark X3650, X4650, X5650 printers 5x30ml ND Brand premium water-based dye ink for Lexmark 36A 37A ink cartridges Easy refilling! Big saving! Stability: No setting in 3 years (at normal storage) Temperature: -15C no frozen and 70C no gelling Lightfastness: 5-6 BWS; Waterfastness: 3 (Average); Gasfastness: 4 (Good).