This medium reagent tub can hold up to 30 ml of MagNA Pure LC reagents on the stage of the MagNA Pure LC Instrument. Positioning fins at each side of the tub are designed to ensure the correct fit in the slots of the reagent tub rack. The V-shaped bottom reduces the dead volume to a minimum. Marking (in 5 ml steps) and numbers (from 10 to 30 ml) on the tubs help the user estimate the volume of the buffer in the tub. The tubs can be sealed with MagNA Pure LC Tub Lids (small, medium).