Cartasol® Blue K5R Liquid is a dye that offers vastly superior properties compared to traditional basic dyes. Structurally closer to Cartasol® F anionic direct dyes, they are applicable in the same industry segments, including fine paper, board, and tissue. Their cationic charge ensures excellent substantivity and fiber affinity, rapidly exhausting them and requiring minimal contact time to achieve full dye yields with clean backwaters.