Stainer bottles are containers designed to hold and dispense various types of stains and dyes used in the laboratory, woodworking, and textile industries. These bottles are typically made of plastic or glass and come in various shapes and sizes.The design of stainer bottles typically includes a dropper or dispenser tip that allows users to easily control the flow of the stain or dye. The dropper or dispenser tip may be operated by squeezing the bottle or by twisting a cap to release the contents.