The Winsor & Newton Designers Drawing Ink is a high-quality, professional-grade ink that is perfect for creating vibrant and eye-catching artwork. This Apple Green ink is a 14ml bottle, and is made with a high-grade pigment that is lightfast and permanent. It is suitable for use with dip pens, brushes, and airbrushes, and is also suitable for use on paper, board, and other surfaces. The ink is water-resistant and non-clogging, and is also acid-free and pH neutral. It is easy to use and can be thinned with water for a variety of effects. The ink is also lightfast and fade-resistant, so your artwork will remain vibrant and beautiful for years to come. With its superior quality and vibrant colors, the Winsor & Newton Designers Drawing Ink is the perfect choice for any artist looking to create stunning artwork.