A range of 100% oil-free diaphragm pumps designed specifically for use in laboratories and educational establishments. They are clean and quiet in operation, requiring virtually no maintenance and are ideal replacements for water jet pumps. Suitable for use with vacuum or pressure, supplied in robust metal cases with a carrying handle. The front panel houses the inlet and outlet hose connectors (for 6mm id tubing) together with the on/off switch. The motors are designed for continuous and reliable operation, additional safety being provided by means of a thermal switch. Applications include vacuum filtration, pressure filtration, analysers, gas sampling analysis and monitoring, circulation and transfer of gases and vapours, flame photometers, vacuum desiccation, small evaporators, pick and place operations, vacuum forming.