A microfabricated sheath flow structure for producing a sheath flow includes a primary sheath flow channel for conveying a sheath fluid, a sample inlet for injecting a sample into the sheath fluid in the primary sheath flow channel, a primary focusing region for focusing the sample within the sheath fluid and a secondary focusing region for providing additional focusing of the sample within the sheath fluid. The secondary focusing region may be formed by a flow channel intersecting the primary sheath flow channel to inject additional sheath fluid into the primary sheath flow channel from a selected direction. A sheath flow system may comprise a plurality of sheath flow structures operating in parallel on a microfluidic chip.

A microfabricated sheath flow structure for producing a sheath flow includes a primary sheath flow channel for conveying a sheath fluid, a sample inlet for injecting a sample into the sheath fluid in the primary sheath flow channel, a primary focusing region for focusing the sample within the sheath fluid and a secondary focusing region for providing additional focusing of the sample within the sheath fluid. The secondary focusing region may be formed by a flow channel intersecting the primary sheath flow channel to inject additional sheath fluid into the primary sheath flow channel from a selected direction. A sheath flow system may comprise a plurality of sheath flow structures operating in parallel on a microfluidic chip.

An apparatus for packaging of loose product includes a loading station, a box forming station and an uploading station. The loading station includes moveable chutes in spaced apart relation. Each chute has an open top, an open upstream end, and an open downstream end. The open top is configured to receive loose product while moving along a first feed path. The box forming station is operable to partially erect boxes in spaced apart relation with first and second open sides and align the first open side of each box with the downstream end of a corresponding chute while moving along a second feed path. The unloading station includes a stationary vacuum head in communication with the second open side of each box. The vacuum head provides a continuous vacuum source along the second feed path operable to move loose product from the chute into the boxes.

An empties transport system has an airstream transport device with an empties transport conduit, which has a first attachment point for attachment to the reverse vending machine and a second attachment point for attachment to the empties collection container, and an airstream generator, which is attached to the empties transport conduit and is designed to make available, in the empties transport conduit, a transporting airstream by which the empties passing via the first attachment point from the reverse vending machine the empties transport conduit are moved to the empties collection container, and an airlock device, which is arranged on the first attachment point and via which the empties are transferable from the reverse vending machine to the empties transport conduit.

An empties transport system has an airstream transport device with an empties transport conduit, which has a first attachment point for attachment to the reverse vending machine and a second attachment point for attachment to the empties collection container, and an airstream generator, which is attached to the empties transport conduit and is designed to make available, in the empties transport conduit, a transporting airstream by which the empties passing via the first attachment point from the reverse vending machine the empties transport conduit are moved to the empties collection container, and an airlock device, which is arranged on the first attachment point and via which the empties are transferable from the reverse vending machine to the empties transport conduit.

A microfabricated sheath flow structure for producing a sheath flow includes a primary sheath flow channel for conveying a sheath fluid, a sample inlet for injecting a sample into the sheath fluid in the primary sheath flow channel, a primary focusing region for focusing the sample within the sheath fluid and a secondary focusing region for providing additional focusing of the sample within the sheath fluid. The secondary focusing region may be formed by a flow channel intersecting the primary sheath flow channel to inject additional sheath fluid into the primary sheath flow channel from a selected direction. A sheath flow system may comprise a plurality of sheath flow structures operating in parallel on a microfluidic chip.

The method includes covering a first opening of at least one first chute using a lid, delivering air from a pressurized air source into the at least one first chute, and advancing at least one first plunger through a first end of the at least one first chute to transfer a product through a second end of the at least one first chute and into a first open side of at least one first box.

A method of minimizing material mixing in a piping system during a transition between a first material and a second material includes providing a plurality of pipe pigs in a first pipe section with the plurality of pipe pigs being sufficient to substantially fill a cross-section of the first pipe section and to define a plug having a leading edge and a trailing edge such that the leading edge is in contact with a first material and the trailing edge is in contact with a second material. Each pipe pig has a nominal size that is smaller than an effective diameter of the first pipe section. The plug is moved through the piping system by moving the second material. Advantageously, mixing of the first material and the second material is inhibited by the plug.

A method of minimizing material mixing in a piping system during a transition between a first material and a second material includes providing a plurality of pipe pigs in a first pipe section with the plurality of pipe pigs being sufficient to substantially fill a cross-section of the first pipe section and to define a plug having a leading edge and a trailing edge such that the leading edge is in contact with a first material and the trailing edge is in contact with a second material. Each pipe pig has a nominal size that is smaller than an effective diameter of the first pipe section. The plug is moved through the piping system by moving the second material. Advantageously, mixing of the first material and the second material is inhibited by the plug.

An apparatus for packaging of loose product includes a loading station, a box forming station and an uploading station. The loading station includes moveable chutes in spaced apart relation. Each chute has an open top, an open upstream end, and an open downstream end. The open top is configured to receive loose product while moving along a first feed path. The box forming station is operable to partially erect boxes in spaced apart relation with first and second open sides and align the first open side of each box with the downstream end of a corresponding chute while moving along a second feed path. The unloading station includes a stationary vacuum head in communication with the second open side of each box. The vacuum head provides a continuous vacuum source along the second feed path operable to move loose product from the chute into the boxes.