4X30ML Nano Dye Ink (1 BK+1C+1M+1Y) + 1 Thumb Drill for Lexmark cartridge #43 #44 and printer X4850, X4875, X4950, X4975, X6570, X6575, X7550, X7675, X9350, X9575, Z1520 ... Water-based Photo Dye Inkjet Ink Smell: Normal odor; PH: 6-8; Particles: N/A. Stability: No settling in 3 years (at normal storage) Temperature: -15C no frozen and 70C no gelling Lightfastness: 5-6 BWS; Waterfastness: 3 (Average); Gasfastness: 4 (Good).