The all-purpose funnels are suitable for use in many areas, such as industry or laboratories. In the laboratory, the funnel is a basic instrument used in many laboratory applications, such as filtering suspensions and solutions, or adding reagents to a reaction vessel or stirred flask. The all-purpose funnels are suitable for use in many areas, such as industry or laboratories. In the laboratory, the funnel is a basic instrument used in many laboratory applications, such as filtering suspensions and solutions, or adding reagents to a reaction vessel or stirred flask.