Laboratory clamps and lab stands are required in chemistry & Biology labs to hold burette, especially while performing a titration. The length of these stands vary and they are all plastic coated to avoid corrosion and rust. Clamps fit onto the stand and hold the burette with it. A Boss head is used to keep the clamp in its place.

Based on the way they have been engineered clamps can be of various types, for example, a Right angle boss head clamp holder will hold two rods at right angles forming L or T shape. These clamps are made of durable alloy with appropriate coatings.