The present invention relates to the field of hygienic ophthalmologic examination. In particular, provided is a slit lamp biomicroscope comprising a laminar airflow device, and methods of using the same.

The method to control cleanroom conditions, including zone particle concentration, occupancy status, and heating, ventilation, and air conditioning (HVAC) system conditions, includes detecting a zone particle concentration, an occupancy status, and HVAC system conditions. The cleanroom includes the HVAC system in communication with the zone of the cleanroom and with a computer processor as a control unit of the cleanroom. The zone particle concentration, the occupancy status, and the HVAC system conditions are communicated to the computer processor, and a desired zone particle concentration is determined based on a range of desired HVAC system conditions with model predictive control. A first control signal to the HVAC system based on the occupancy status, the zone particle concentration, and the desired zone particle concentration is determined. The first control signal is communicated to the HVAC system, and the HVAC system activates according to the first control signal.

A system and method for creating a microenvironment within an ambient environment is disclosed. The first outlet is configured for expelling a gas at a first velocity sufficient for producing a gas curtain that separates the microenvironment from the ambient environment. The second outlet is configured for expelling the gas at a second velocity within the microenvironment. An inlet is spaced apart from the first outlet and the second outlet and is in fluid communication with a suction unit. The suction unit is positioned downstream of the inlet and configured for removing gas from the microenvironment through the inlet. The first velocity is greater than the second velocity.

An air-wall room system, suspended from a room ceiling, having a compressed air discharge duct. The air discharge duct is used for circulating compressed air into a hollow, four sided, upper air-wall frame with air openings. The air from the upper air-wall frame is circulated into a work space. The hollow upper air-wall frame includes air discharge ports for creating an air-wall. The air-wall, similar to a curtain, prevents toxic gases from escaping outside the work space. Corners of the upper air-wall frame are attached to vertical frame members. A bottom of the vertical frame members is attached to corners of a hollow, four sided, lower air-wall frame. The lower air-wall frame includes vacuum ports for receiving the bottom of the air-wall. A side of the lower air-wall frame is connected to a vacuum air exhaust duct. The air exhaust duct is used for drawing a vacuum in the hollow lower air-wall frame and exhausting the air-wall out a vacuum air exhaust duct.

An air-wall room system, suspended from a room ceiling, having a compressed air discharge duct. The air discharge duct is used for circulating compressed air into a hollow, four sided, upper air-wall frame with air openings. The air from the upper air-wall frame is circulated into a work space. The hollow upper air-wall frame includes air discharge ports for creating an air-wall. The air-wall, similar to a curtain, prevents toxic gases from escaping outside the work space. Corners of the upper air-wall frame are attached to vertical frame members. A bottom of the vertical frame members is attached to corners of a hollow, four sided, lower air-wall frame. The lower air-wall frame includes vacuum ports for receiving the bottom of the air-wall. A side of the lower air-wall frame is connected to a vacuum air exhaust duct. The air exhaust duct is used for drawing a vacuum in the hollow lower air-wall frame and exhausting the air-wall out a vacuum air exhaust duct.

A method for the preparation of pharmaceutical products is provided that utilizes a machine having a containing liner, a dosing chamber for preparing at least one pharmaceutical product accommodated within the containing liner, and a pneumatic ventilation device for feeding two air flows through the dosing chamber and through the containing liner, respectively. Operation of the pneumatic ventilation device is selectively controlled so that the containing liner has inside a pressure lower than a pressure existing within the dosing chamber and than a pressure existing in the environment outside the containing liner itself.

A method for preparing decontamination measures within a room located in a building and used by people includes a planning acquisition step. Therein, a plurality of regions of use within the room are identified, and for each region an expected use intensity is determined based on previously determined parameters. In a subsequent planning implementation step, for each region of use, proceeding from the expected use intensity, a suction means assigned to said region of use and having an associated supply air volume flow is specified. In a method by carrying out the decontamination measures, while the decontamination measures are being carried out, operation of individual suction means is adjusted to an actual use of the assigned region of use by people, and a suction volume flow suctioned by the suction means in question is specified, between a minimum value specified for the suction means in question, and a maximum value.

A method for preparing decontamination measures within a room located in a building and used by people includes a planning acquisition step. Therein, a plurality of regions of use within the room are identified, and for each region an expected use intensity is determined based on previously determined parameters. In a subsequent planning implementation step, for each region of use, proceeding from the expected use intensity, a suction means assigned to said region of use and having an associated supply air volume flow is specified. In a method by carrying out the decontamination measures, while the decontamination measures are being carried out, operation of individual suction means is adjusted to an actual use of the assigned region of use by people, and a suction volume flow suctioned by the suction means in question is specified, between a minimum value specified for the suction means in question, and a maximum value.

A housing for a laboratory appliance with a floor, ceiling, rear wall, side walls and front wall, which together enclose a work space. The front wall is movable between closed position and open positions. A work area in which liquids can be handled is provided in the work space. A filter device for ambient air is connected to the work space via at least one air outlet. At least one air inlet is connected to the environment, and a fan and an air filter are located downstream from the air inlet and upstream from the air outlet. An outflow opening is also located on the housing. The at least one air outlet and the at least one outflow opening are arranged on the housing such that, during operation of the filter device, the filter air stream flows substantially parallel to and along the work area.

Laminar air flow workstation, comprising: a working chamber (1) comprising a work table (2), an air circulation system (3) comprising first heating means (4), and configured to circulate heated air in the workstation and direct a heated and temperature controlled air flow towards the work table (2), wherein the working chamber comprises a front handling opening (6) in fluid connection with the surroundings (7), and configured such that the work table (2) can be accessed from the surroundings (7). Also disclosed are the use of the workstation for handling and/or microscopy of biological materials, such as tissue, embryos, and stem cells, as well as the use of the workstation for microbiological safety workstation in accordance with ISO/EN 12469.