Work mat 10 for supporting laboratory vessels 12. The work mat 10 includes a flexible planar panel 14 having opposed sides 16, 18, where one side 16 defines a base 20, and the other side 18 defines a vessel support portion 22. Each of the base 20 and the vessel support portion 22 are configured to allow releasably adhering the panel 14 to another object. The base 20 is configured to adhere to another object more firmly than the vessel support portion 22. In use, the base 20 is adherable to a surface 24 (FIG. 7) and the vessel support portion 22 is adherable and removable from a laboratory vessel 12 without detaching the base 20 from the surface 24

Work mat 10 for supporting laboratory vessels 12. The work mat 10 includes a flexible planar panel 14 having opposed sides 16, 18, where one side 16 defines a base 20, and the other side 18 defines a vessel support portion 22. Each of the base 20 and the vessel support portion 22 are configured to allow releasably adhering the panel 14 to another object. The base 20 is configured to adhere to another object more firmly than the vessel support portion 22. In use, the base 20 is adherable to a surface 24 (FIG. 7) and the vessel support portion 22 is adherable and removable from a laboratory vessel 12 without detaching the base 20 from the surface 24

A gas fixture safety cover comprising: a plurality of walls, and a plurality of nozzle slots located in the walls, and plurality of handle slots located in the walls, the walls and slots configured to allow the gas fixture safety cover to slide over a gas fixture and abut a countertop if all of the gas valve handles are in an off position, and further configured to prevent the gas fixture safety cover from sliding over a gas fixture and abutting a counter top if any of the gas valve handles are in a turned on position.

A gas fixture safety cover comprising: a plurality of walls, and a plurality of nozzle slots located in the walls, and plurality of handle slots located in the walls, the walls and slots configured to allow the gas fixture safety cover to slide over a gas fixture and abut a countertop if all of the gas valve handles are in an off position, and further configured to prevent the gas fixture safety cover from sliding over a gas fixture and abutting a counter top if any of the gas valve handles are in a turned on position.

A sample identification system for an automated sampling device is described. A system embodiment includes, but is not limited to, a sample holder having a plurality of apertures configured to receive a plurality of sample vessels therein, the sample holder having one or more corresponding sample holder identifiers positioned proximate to the sample holder; and an identifier capture device configured to detect the one or more sample holder identifiers positioned proximate to the sample holder and generate a data signal in response thereto, the data signal corresponding to at least an orientation of the sample holder relative to a surface on which the sample holder is positioned.

A thrombelastography device, a heating apparatus, a blood coagulation analysis system, and a rotational angle measurement method are disclosed. The thrombelastography device consists of a plurality of thrombelastography device splits (2) that are horizontally arranged in parallel. The thrombelastography device split (2) comprises a worktable (4), a rack (5), a test bar (6), a tester (8), and a processor (9). The thrombelastography device overcomes the defect in the prior art that the measurement result of a thrombelastography device is inaccurate. The amount of reflected light is used as a reference for thrombelastographic evaluation, and thus the result is more accurate.

A thrombelastography device, a heating apparatus, a blood coagulation analysis system, and a rotational angle measurement method are disclosed. The thrombelastography device consists of a plurality of thrombelastography device splits (2) that are horizontally arranged in parallel. The thrombelastography device split (2) comprises a worktable (4), a rack (5), a test bar (6), a tester (8), and a processor (9). The thrombelastography device overcomes the defect in the prior art that the measurement result of a thrombelastography device is inaccurate. The amount of reflected light is used as a reference for thrombelastographic evaluation, and thus the result is more accurate.

The invention relates to a safety workbench (1) having a work space (3) surrounded by a housing (2) having a work opening (6) located in the housing front side (4) and adjustable with an adjustable front panel (5) for admitting into the work space (3) an air inlet flow (7), an exhaust blower (8) and a circulating air blower (9) for conveying an air flow (10) in the safety workbench (1), which are designed such that a partial air flow drawn in by the exhaust blower (8) is filtered through an exhaust air filter (11) as exhaust air flow (12) from the safety workbench (1) and a partial air flow drawn in by the circulating air blower (9) through a circulating air filter (13) as downwardly directed circulating air flow (14) into the work space (3), and a control device (15), a differential pressure sensor (16) and two pressure transducers (17, 18) connected thereto which are designed to measure a pressure at two different positions within the safety workbench d, wherein a first of the pressure sensors (17) is arranged in the immediate vicinity of the fan blades (90) on the low pressure side (91) of the circulating air blower (9) and a second of the pressure sensors (18) is arranged in a low-flow area, (20) on the low pressure side (91) of the circulating air blower (9). The invention further relates to a method of operating a safety workbench according to any of the preceding claims, comprising the steps of: a) determining a pressure difference between the first pressure transducer (17) and the second pressure transducer (18) by means of the differential pressure sensor (16), b1) comparing the pressure difference determined in a) with a nominal pressure difference stored in the control device (15), which corresponds to a nominal volume flow, or b2) converting the pressure difference measured in a) into an associated volume flow and comparing the calculated volume flow with one nominal volume flow stored in the control device (15), and c) regulating the circulating air blower (9) such that the nominal volume flow is conveyed.

The invention relates to a safety workbench (1) having a work space (3) surrounded by a housing (2) having a work opening (6) located in the housing front side (4) and adjustable with an adjustable front panel (5) for admitting into the work space (3) an air inlet flow (7), an exhaust blower (8) and a circulating air blower (9) for conveying an air flow (10) in the safety workbench (1), which are designed such that a partial air flow drawn in by the exhaust blower (8) is filtered through an exhaust air filter (11) as exhaust air flow (12) from the safety workbench (1) and a partial air flow drawn in by the circulating air blower (9) through a circulating air filter (13) as downwardly directed circulating air flow (14) into the work space (3), and a control device (15), a differential pressure sensor (16) and two pressure transducers (17, 18) connected thereto which are designed to measure a pressure at two different positions within the safety workbench d, wherein a first of the pressure sensors (17) is arranged in the immediate vicinity of the fan blades (90) on the low pressure side (91) of the circulating air blower (9) and a second of the pressure sensors (18) is arranged in a low-flow area, (20) on the low pressure side (91) of the circulating air blower (9). The invention further relates to a method of operating a safety workbench according to any of the preceding claims, comprising the steps of: a) determining a pressure difference between the first pressure transducer (17) and the second pressure transducer (18) by means of the differential pressure sensor (16), b1) comparing the pressure difference determined in a) with a nominal pressure difference stored in the control device (15), which corresponds to a nominal volume flow, or b2) converting the pressure difference measured in a) into an associated volume flow and comparing the calculated volume flow with one nominal volume flow stored in the control device (15), and c) regulating the circulating air blower (9) such that the nominal volume flow is conveyed.

An arrangement for preparation of a distillation measurement of a liquid includes a heater and a traversing system. The heater supports a perforated plate selected from a group of standardized perforated plates which further supports a container containing the liquid. The heater is enabled and controlled during the performance of a standardized test for determining evaporation properties of the liquid. The traversing system is adapted to traverse the heater and to interrupt a further traversing of the heater, if a pressure force of the perforated plate put onto the heater against the container reaches a threshold value.