A lab hydraulic press is a machine used for applying high pressure to a small sample or specimen. It consists of a hydraulic cylinder, which generates the pressure, and a ram or piston, which presses the specimen.

The press typically has a pressure gauge or load cell to measure the applied force and may have a digital display to show the pressure or force. Lab hydraulic presses are commonly used in materials science and engineering to study the properties of materials under high pressure, such as compressibility, elasticity, and deformation behavior.

They may also be used in chemistry and biology to prepare or process samples, such as pressing powders into pellets or extracting oils from seeds.