Abstract: An automated sampler-injector apparatus and method of sampling, for taking samples from multiple sources and repetitively injecting small portions of a quantity sampled from a single source into a liquid chromatograph column for analysis. The apparatus comprises a syringe and injector tube forming a syringe loop for drawing a quantity of sample from a sample container. A carousel for positioning a selected sample container beneath the syringe loop is provided, and an injector valve having a sample loop therein is further provided for receiving portions of a quantity of sample from the syringe loop and retaining such portion in the sample loop and further transferring the portion of sample from the sample loop into a liquid chromatograph for analysis.

Abstract: Insolubles are removed from sylvinite ores by froth flotation using a small amount of a primary, secondary or primary-ether alkyl amine as collector in combination with a flocculant. In the case of a primary alkyl amine, the collector may be the same as the collector used in the subsequent froth flotation to recover sylvite from the ore.

Abstract: This invention relates to a multi-point information distribution system useful for telephone service, data connecting systems and other applications which permits a central station to service a plurality of outlying stations, through transmission media such as radio waves or wire cables, in privacy and using only one transmitting medium such as a first transmitting carrier frequency and one separate receiving medium such as a different receiving carrier frequency. The transmission media couples selected input connection points to selected terminating circuit devices one at a time. In accordance with the invention, the content on input connecting ports from a community dial office or other central system is time sampled at the central station which then transmits a sequentially ordered sample stream. Each terminating circuit or device is adapted to receive the content of only one time slot, and to transmit only during a coordinated and synchronized time slot.