👉 A marker fluid, also known as ink or marker medium, is a crucial component in marker systems used for writing and drawing. It serves as the carrier for the pigment or dye that gives color to the marks, ensuring that the ink adheres properly to paper or other surfaces. The fluid's viscosity, which is its thickness and resistance to flow, plays a significant role in the marker's performance; it affects how smoothly the ink flows and how well it dries. Marker fluid also contains additives that enhance its properties, such as preventing clogging of the marker tip, improving adhesion to surfaces, and providing durability to the marks. Overall, the marker fluid is essential for achieving clear, vibrant, and long-lasting writing and drawing experiences.