The Le Chatelier flask shown in as below fig. is made of thin glass having a bulb at this bottom. The capacity of this bulb is nearly 250 ml. The bulb is 78 mm in mean diameter. The stem is graduated milliliters; the small oval bulb in the neck holds 17 ml, below this bulb, are graduations from 0-1ml; above the bulb, the neck is graduate from 18-24 ml. This portion above the 24 ml mark is in the form of a funnel having a top diameter as 50 mm. Thus the total capacity of the stem of a bulb is 24 ml. A glass stopper or nipple is fitted in the stem to cover the flask.