Various sorts of clamps are available, e.g. clamps with three prongs (two on one side and one on the other), or with two rounded prongs, with one on each side. Clamps are used to hold laboratory glassware, such as Erlenmeyer flasks, distillation flasks, tubing, round bottom flasks, thermometers, etc. These tools allow the placement of an apparatus at various distances from the lab frame. Spring-loaded open-jaw clamps can be tightened down to hold something securely in place. The holding materials are made out of different substances, stainless steel e.g. offers high chemical resistance and durability. Aluminum offers great strength with a light weight. Here you learn more about specific characteristics of various materials.
The flow-rate of fluids or gas in hoses can be regulated or stopped by using tube clamps. Knurled nuts on tube clamps enable a continuous flow regulation. Tube clamps made of stainless steel and aluminium make the lab aids extremely heat resistant and robust. Various sizes and diameter are available.