Abstract: A method and system for detecting foreign particles in a liquid, the method and system include transmitting transmitted pulses of radiation, by a transmitter, towards a liquid conduit that is filled with liquid; wherein the transmitted pulses comprises pulses that differ from each by being associated with absorbance frequencies of different foreign particles; receiving, by a receiver, received pulses that propagated through liquid as a result of the transmission of the multiple transmitted pulses; comparing between the transmitted pulses and the received pulses to provide a comparison result; and determining a liquid contamination based on the comparison result.

Abstract: A method and system for detecting foreign particles in a liquid, the method and system include transmitting transmitted pulses of radiation, by a transmitter, towards a liquid conduit that is filled with liquid; wherein the transmitted pulses comprises pulses that differ from each by being associated with absorbance frequencies of different foreign particles; receiving, by a receiver, received pulses that propagated through liquid as a result of the transmission of the multiple transmitted pulses; comparing between the transmitted pulses and the received pulses to provide a comparison result; and determining a liquid contamination based on the comparison result.

Abstract: A method and system for detecting foreign particles in a liquid, the method and system include transmitting transmitted pulses of radiation, by a transmitter, towards a liquid conduit that is filled with liquid; wherein the transmitted pulses comprises pulses that differ from each by being associated with absorbance frequencies of different foreign particles; receiving, by a receiver, received pulses that propagated through liquid as a result of the transmission of the multiple transmitted pulses; comparing between the transmitted pulses and the received pulses to provide a comparison result; and determining a liquid contamination based on the comparison result.

Abstract: Apparatus for detecting substances in an air sample, the apparatus including: a source of air pressure differential; a cyclone connected to the source of air pressure differential; an air input port connected to the cyclone, to receive the air sample; a substance output port connected to the cyclone, to receive the substances; an input port configured to disperse a finely separated material so that it mixes with said sample; and a detector located at the substance output port, to detect a chemical change in at least one of the substances and the finely separated material.

Abstract: A device cooling an item having a cooling chamber having a cooling cavity with a top opening sized and shaped for receiving the item, at least one cooling element which cools the cooling cavity during a cooling session, an elevation mechanism for lifting and lowering the item, from and into the cooling cavity, via the top opening, and a control unit which controls the elevation mechanism according to at least one of a measurement of a temperature in the cooling cavity during the cooling session, a measurement of a temperature in the cooling cavity after the cooling session, and a duration of the cooling session.

Abstract: Apparatus for detecting substances in an air sample, the apparatus including: a source of air pressure differential, a cyclone connected to the source of air pressure differential, an air input port connected to the cyclone, to receive the air sample, a substance output port connected to the cyclone, to receive the substances, an input port configured to disperse a finely separated material so that it mixes with said sample, and a detector located at the substance output port, to detect a chemical change in at least one of the substances and the finely separated material.