Abstract: An analyte permeation testing instrument with an edge leakage minimizing feature and a method of measuring permeability of a test film for a target analyte utilizing the analyte permeation testing instrument. The instrument includes a cartridge and a target analyte sensor. The cartridge has separable first and second plates having first and second cells respectively. The plates are operable for engaging a test film therebetween so as to sealingly separate the first and second cells. A surround around at least one of the first cell and the second cell projects within the interface between the first and second plates for engaging a periphery of the test film to compress the test film and thereby form a peripheral edge seal when the plates are clamped together.

Abstract: Various example embodiments disclosed herein include systems and methods for a wall hanging system. Example embodiments include: a wall mount formed with a longitudinally elongated body having upper and lower ends and a wall-facing surface, the upper end being formed with a longitudinal rail for engaging a channel in a frame member, the wall mount including an attachment mechanism to attach the wall mount to a wall surface, the wall mount further including an embedded leveling indicator to enable level attachment of the wall mount to the wall surface; and a frame including at least one frame member, each frame member being formed with a first longitudinal channel for engaging the rail of the upper end of the wall mount, each frame member being formed with a second longitudinal channel for engaging an edge of a wall hanging item inserted into the frame.

Abstract: A disposable positive displacement pump is disclosed. The pump includes a pump housing having head portion and a body, the head portion having one or more fluid passage openings. The pump also includes a rolling diaphragm internal to the pump housing and defining a fluid chamber within the pump housing. The pump further includes a piston drive unit configured to reciprocally drive the rolling diaphragm to move fluid in or out of the fluid chamber. A method of dispensing a fluid is also disclosed.

Abstract: A positive displacement dosing system and method of dispensing a fluid including a plurality of disposable positive displacement pumps. The disposable positive displacement pumps each include a pump body having head portion and a base portion, with the head portion having one or more fluid passage openings. Each disposable positive displacement pump also includes a rolling diaphragm internal to the pump body and defining a fluid chamber within the pump body. The disposable positive displacement pump also includes a piston drive unit configured to reciprocally drive the rolling diaphragm to move fluid in or out of the fluid chamber. The positive displacement dosing system includes tubing connecting the fluid reservoir to the disposable positive displacement pump.

Abstract: A disposable positive displacement pump is disclosed. The pump includes a pump housing having head portion and a body, the head portion having one or more fluid passage openings. The pump also includes a rolling diaphragm internal to the pump housing and defining a fluid chamber within the pump housing. The pump further includes a piston drive unit configured to reciprocally drive the rolling diaphragm to move fluid in or out of the fluid chamber. A method of dispensing a fluid is also disclosed.

Abstract: A positive displacement dosing system is disclosed. The system includes a plurality of disposable positive displacement pumps. The disposable positive displacement pumps each include a pump body having head portion and a base portion, with the head portion having one or more fluid passage openings. Each disposable positive displacement pump also includes a rolling diaphragm internal to the pump body and defining a fluid chamber within the pump body. The disposable positive displacement pump also includes a piston drive unit configured to reciprocally drive the rolling diaphragm to move fluid in or out of the fluid chamber. The positive displacement dosing system includes tubing connecting the fluid reservoir to the disposable positive displacement pump. A method of dispensing a fluid is disclosed as well.