A door for a laboratory workstation is disclosed. The laboratory workstation has a horizontally extending work surface for providing a working area. The door is movable in relation to the work surface in a vertical direction perpendicular to the work surface between a safety position, in which the door closes the working area for manual access of a user, an access position in which the working area is open for manual access of a user, and a loading position.

A sash system includes a sash, a counter-weight coupled to the sash by a coupling member, a locking mechanism coupled to at least one of the sash and the coupling member, and a controller coupled to the locking mechanism. The locking mechanism is transitionable between an open configuration where the locking mechanism does not inhibit movement of at least one of the sash and the coupling member, and a locked configuration where the locking mechanism inhibits movement of the at least one of the sash and the coupling member. The controller is configured to control operation of the locking mechanism to selectively transition between the open configuration and the locked configuration based on a condition of the sash. The sash and the counter-weight are configured such that when the locking mechanism is in the open configuration, the sash lowers due to gravity.

A fume hood adapted to be connected to an exhaust system has a ventilated chamber with a rear wall, opposite side walls, a ceiling, a floor, and an access opening. A baffle assembly is located in front of the rear wall and includes a lower panel and an upper panel. The lower panel has opposite side edges extending between the chamber side walls, a lower edge spaced apart from the chamber floor, and a plurality of air-exit apertures. The upper panel has opposite side edges extending between the chamber side walls, a lower edge attached to an upper portion of the lower panel, an opposite upper edge attached to the chamber ceiling, and a plurality of air-exit apertures. An elongated grating covers a gap between the lower panel lower edge and the chamber floor and includes a plurality of air-exit apertures.

A machine for removing substrate material from a part produced by a 3-D printer. The machine includes a housing having a working chamber defined therein. A spray header is disposed along at least a portion of the perimeter of the working chamber. A pump is configured and arranged to convey a fluid at varying pressures through the spray header. The fluid contacts the part and then flows to the bottom of the working chamber to a fluid outlet.

In one embodiment, a laboratory fume hood equipment air channeling system may include a platform having a plurality of vertical air channels therethrough, support legs configured to hold the platform above the countertop work surface of a laboratory fume hood, and an air chamber formed beneath the platform. The platform may include a lattice of interconnected horizontal slats forming a plurality of vertical air channels through the platform. The platform may have sidewall surfaces, an upper surface, and a lower surface. The support legs may be attached to the platform to hold the platform above the countertop work surface of the laboratory fume hood. The countertop work surface and the lower surface of the platform may form the air chamber beneath the platform. The air chamber may be in fluid communication with the vertical air channels increasing air flow through the vertical air channels and increasing air flow horizontally from front to back of the laboratory fume hood along the countertop work surface. The air chamber being in fluid communication with the vertical air channels increases the air flow around all sides of one or more laboratory equipment located on the upper surface of the platform. The sidewall surfaces, the upper surface, and the lower surface of the platform with the vertical air channels may together define a bulk volume of the platform, the bulk volume having void space defined by the vertical air channels. In one example, the bulk volume comprises at least 70% void space.

A fume hood control system includes a fume food. The fume hood includes a first baffle, a sash and a hood enclosure positioned within an environment. The hood enclosure includes a plurality of sidewalls forming a work chamber, a first aperture configured to permit an airflow between the environment and the work chamber, and a second aperture configured to permit the airflow between the work chamber. The sash is configured to at least partially cover the first aperture. The first baffle is configured to direct a path of the airflow within the work chamber. The first baffle is transitionable between a first number of positions. The fume hood control system includes a controller configured to determine, via a sash sensor, a current position of the sash. The controller is further configured to determine, via a baffle position sensor, a current position of the first baffle. The controller is further configured to control the operation of the first baffle to transition between the current position of the first baffle and an updated position of the first baffle in response to the current position of the sash, the current position of the first baffle, and one or more pressure measurements.

A fume hood control system includes a fume hood. The fume hood includes a sash, an exhaust valve, and a hood enclosure positioned within an environment. The exhaust valve is transitionable between a number of positions. The fume hood control system includes a controller. The controller is configured to determine a differential pressure measurement, determine a current position of the exhaust valve, determine a position of the sash, and control the operation of the exhaust valve to selectively transition between the current position of the exhaust valve and an updated position of the exhaust valve based on at least one of: (1) a difference between a setpoint differential pressure value and the differential pressure measurement and (2) the position of the sash.

A method for removing substrate material from a part produced by a 3-D printer. The machine includes a housing having a working chamber defined therein. A spray header is disposed along at least a portion of the perimeter of the working chamber. A pump is configured and arranged to convey a fluid at varying pressures through the spray header. The fluid contacts the part and then flows to the bottom of the working chamber to a fluid outlet.

Methods, systems, and apparatus are described which can safely reduce a laboratory fume hood's minimum airflow and energy consumption when it is determined that the fume hood is not in active use, based on a condition monitoring approach. The condition monitoring approach may incorporate a combination of setback criteria to reliably determine if the fume hood is or is not in use. When a determination has been made that a fume hood is not in use, energy reduction is achieved via automatic methods of hood minimum airflow setback. Fume hood minimum flow reductions are automatically disabled when it is determined that the hood is in active use.

To provide a mist collecting system for multiple processing chambers that appropriately performs mist collection in multiple processing chambers by a single mist collector. A mist collecting system for multiple processing chambers including a mist collector configured to collect mist generated in a processing chamber, a duct that is branched and configured to connect the mist collector to multiple processing chambers, multiple electric duct shutters that are provided corresponding to the multiple processing chambers and are piped to branched portions of the duct, and a control device configured to control the mist collector and opening/closing of each of the multiple duct shutters.