A laboratory cryostat is a highly specialised device used to maintain extremely low temperatures for various scientific applications. It is commonly employed in fields such as physics, materials science, and biological research, where precise temperature control is crucial. Cryostats use cryogenic liquids like liquid nitrogen or helium to cool samples, instruments, or devices to temperatures near absolute zero. This enables researchers to study materials' properties under ultra-cold conditions, which can reveal important details about their behavior. Applications include preserving biological specimens, conducting superconductivity experiments, and enabling sensitive measurements in quantum mechanics.