Measuring just 2.5cm long and weighing a mere 32g, the new NF5 diaphragm liquid pump from KNF Neuberger UK can deliver liquid/gas mixtures at up to 50ml per minute. The key to this miniaturisation, according to KNF, is in the design of the diaphragm. The unit has a suction height of 4m, is very quiet in operation and has low power consumption. All these characteristics make the NF5 suitable for a range of battery powered, portable applications, as well as a host of medical, vending and other machine building jobs that require low rates of liquid delivery.