This icon represents do not mix. The icon has two line pointing down crossing over each other towards the top. There is a line crossing over both lines that is crossing each other.
This Do Not Mix icon is made in Material Design style
developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 6,000 icons, all in the same style and quality.