Glass U-Tube with one plain limb and one graduated limb. Limb graduated 25-35ml x 0.2ml terminating in a bulb with third limb joined at right angles to the plane of the other two. A rubber tube with 2 mohr’s clips is attached to the short length of glass tube. The long length glass with wide bore has a rubber cork with a glass tube inside and a stirrer. Supplied with a beaker capacity 1 liter, made of borosilicate glass.