摘要:
An apparatus for metering required proportions of different fluid ingredients to make a required mixture (e.g. a colored paint) includes a rack of storage containers (20) for the ingredients, each provided with a valve-controlled outlet (33) and a receiving container (42) mounted on a weighing means (40) which is presentable by a support (41) to a chosen sequence of storage containers in turn to receive the required contribution from each. Metering of the necessary ingredient additions is effected automatically by valve-actuating means (61) carried by the weighing means support (41). Data processing control to optimise operation is described.