Compatible with Models: HP 21, 27, 56, 678, 802, 818 and SAMSUNG M75, 80, 90. Colour: Black. Base: Dye-based. Excellent Printing Performance. Formulated with high-quality dyes to offer a bright and vivid printing performance. Printing without flash, booming, suitable for high-speed printing. Stable physical and chemical properties for maintaining long-term printing results. No Block Print. The ink is strictly filtered through 1 micron and 0.5-micron filters to ensure ink particles reach to the standard fineness. Excellent printing consistency and fluency to protect your printer from plug print and reduce printer wear and tear. Cost Effective. 2 x 100ML high-capacity, allowing you to reduce office costs and providing you exceptional printing results to meet your home, school and office printing needs. To ensure safety and environmental protection, we do not use any heavy mental during the ink production. The ink bottle is made of ABS which is the best material to store ink in a safe way.