Abrégé

A method and apparatus for conducting an evaporation procedure to evaporate a liquid component from a liquid sample in a container. The method comprises heating the container towards a target temperature using a heat source having a thermostatic control arrangement, iteratively determining a value of a heat flow parameter with a controller, determining with the controller when the heat flow parameter value has fallen by a predetermined extent from a peak value, and outputting a control signal from the controller in response to said determination, the control signal causing a further step in the evaporation procedure to be carried out.

Classes IPC  ?

• G01N 1/40 - Concentration des échantillons
• B01L 3/00 - Récipients ou ustensiles pour laboratoires, p. ex. verrerie de laboratoireCompte-gouttes
• B01L 7/00 - Appareils de chauffage ou de refroidissementDispositifs d'isolation thermique
• G05D 23/19 - Commande de la température caractérisée par l'utilisation de moyens électriques
• H05B 1/02 - Dispositions de commutation automatique spécialement adaptées aux appareils de chauffage

Abrégé

A method and apparatus (2) for conducting an evaporation procedure to evaporate a liquid component from a liquid sample in a container. The method comprises heating the container towards a target temperature using a heat source (32) having a thermostatic control arrangement (42), iteratively determining a value of a heat flow parameter with a controller (30), determining with the controller when the heat flow parameter value has fallen by a predetermined extent from a peak value, and outputting a control signal from the controller in response to said determination, the control signal causing a further step in the evaporation procedure to be carried out.

Classes IPC  ?

• B01D 1/00 - Évaporation
• G01N 1/40 - Concentration des échantillons

Abrégé

A personal mobility vehicle comprises a chassis (33), a rear wheel (15), a coupled steering tilting and embedded independent shock absorption swing arm system (35) rotationally and centrally connected to a front end of the chassis (33) along a longitudinal axis of the chassis (33), a steering down tube (01), a handle bar and two front wheels (06,07). The leaning and tilting characteristics allow centripetal force to help the vehicle better turn and allow the centrifugal force on the vehicle and rider during turning to be counteracted to provide better stability, comfort and safety. The coupled steering tilting and embedded independent shock absorption swing arm system is operated with simple linkages and embedded torsion rubber shock absorbing system to deliver an aesthetic appearance.

Classes IPC  ?

• B62K 5/08 - Cycles avec guidons, équipés de trois roues principales ou plus avec des dispositifs de direction agissant sur plusieurs roues
• B62K 25/04 - Suspensions des moyeux de roues pour montage élastique des moyeux sur le cadre ou la fourche
• B62K 21/00 - Éléments de la direction

Abrégé

Apparatus and methods are provided relating to evaporation of solvents from samples and to prolonging the time taken to carry out an evaporation procedure. A cap for engaging with an open end of a sample container comprises an engaging surface for engaging with the open end, and a body portion which extends over the open end. The body portion is preformed to define an opening which provides a fluid pathway between the open end of the container and the surroundings of the container, such that the cap impedes vapor flow from a sample in the container to the surroundings of the container. A holder for receiving a plurality of such caps is also provided and a method of evaporating a solvent from a sample in a sample container is described.

Classes IPC  ?

• B01L 3/00 - Récipients ou ustensiles pour laboratoires, p. ex. verrerie de laboratoireCompte-gouttes
• B01L 9/00 - Dispositifs de supportDispositifs de serrage
• B01L 3/06 - Cristallisoirs

Abrégé

Apparatus and methods are provided relating to evaporation of solvents from samples and to prolonging the time taken to carry out an evaporation procedure. A cap (2) for engaging with an open end (10) of a sample container (6) comprises an engaging surface for engaging with the open end, and a body portion (12) which extends over the open end. The body portion is preformed to define an opening (16) which provides a fluid pathway between the open end of the container and the surroundings of the container, such that the cap impedes vapour flow from a sample in the container to the surroundings of the container. A holder (4) for receiving a plurality of such caps is also provided and a method of evaporating a solvent from a sample in a sample container is described.

Classes IPC  ?

• B01L 3/06 - Cristallisoirs
• B01L 3/00 - Récipients ou ustensiles pour laboratoires, p. ex. verrerie de laboratoireCompte-gouttes

Abrégé

A method and sample holding assembly are described for use in the preparation of samples for analysis. The method comprises the steps of collecting a sample in a concentration tube which is open at one end and closed at the other, the closed end being selectively openable. A vial is coupled to the open end, the tube is inverted, the closed end is opened, and then solvent is evaporated from the sample via the opened end until the concentrated sample is confined to the vial. A sample holding assembly for use in the present method is also described. It comprises a concentration tube, and an adaptor arrangement for coupling a vial to the open end of the tube and defining a fluid path between the tube and the vial.

Classes IPC  ?

• B01L 3/00 - Récipients ou ustensiles pour laboratoires, p. ex. verrerie de laboratoireCompte-gouttes
• G01N 1/40 - Concentration des échantillons

Abrégé

A method and sample holding assembly are described for use in the preparation of samples for analysis. In known techniques,following concentration of a sample using an evaporator, the concentrated solution is manually transferred to a smaller vial compatible with analysis apparatus using a pipette. This leads to loss of the sample and risks cross-contamination. Using the present method, a sample is concentrated directly into the vial. The method comprises the steps of collecting a sample in a concentration tube (4) which is open at one end and closed at the other, the closed end being selectively openable. A vial (8) is coupled to the open end, the tube is inverted, the closed end is opened, and then solvent is evaporated from the sample via the opened end until the concentrated sample is confined to the vial. A sample holding assembly for use in the present method is also described. It comprises a concentration tube (4), and an adaptor arrangement (6, 106) for coupling a vial (8) to the open end of the tube and defining a fluid path between the tube and the vial.

Classes IPC  ?

• B01D 1/22 - Évaporation par amenée d'une pellicule liquide au contact d'une surface chauffée
• B04B 5/04 - Appareils à chambre radiale pour séparer des mélanges essentiellement liquides, p. ex. butyromètres
• G01N 1/40 - Concentration des échantillons

Abrégé

An evaporator is provided for evaporation of liquid from a solution or liquid mixtures, together with methods of operation of the evaporator. The evaporator comprises a chamber (1); a liquid reservoir (3) for holding a heat transfer liquid exposed to the interior of the chamber; a support (6) for supporting a container (8) in the chamber, such that the liquid sample in the container is exposed to a fluid path (15) for connection to a condenser (16), the fluid path being separated from the chamber interior, and at least a portion of the container is closely thermally coupled to the chamber interior; and means (4) for heating the heat transfer liquid in the reservoir to create heat transfer liquid vapor, which in use condenses and releases latent heat of vaporization to the liquid sample in the container. As the temperature of the sample is dependent on the saturated vapor temperature of the liquid in the reservoir, the temperature of the samples is reliably limited, thereby avoiding overheating. High levels of heat energy may be delivered controllably to the samples, enabling a high evaporation rate to be achieved at relatively low temperature.

Classes IPC  ?

• B01D 3/08 - Distillation ou procédés d'échange apparentés dans lesquels des liquides sont en contact avec des milieux gazeux, p. ex. extraction dans des récipients en rotationAtomisation sur disques tournants
• B01D 3/10 - Distillation sous vide
• B01D 3/30 - Colonnes de fractionnement à pièces mobiles ou dans lesquelles est produit un mouvement centrifuge
• B01D 1/00 - Évaporation

Abrégé

An evaporator is provided for evaporation of liquid from a solution or liquid mixtures, together with methods of operation of the evaporator. The evaporator comprises a chamber (1); a liquid reservoir (3) for holding a heat transfer liquid exposed to the interior of the chamber; a support (6) for supporting a container (8) in the chamber, such that the liquid sample in the container is exposed to a fluid path (15) for connection to a condenser (16), the fluid path being separated from the chamber interior, and at least a portion of the container is closely thermally coupled to the chamber interior; and means (4) for heating the heat transfer liquid in the reservoir to create heat transfer liquid vapour, which in use condenses and releases latent heat of vaporisation to the liquid sample in the container. As the temperature of the sample is dependent on the saturated vapour temperature of the liquid in the reservoir, the temperature of the samples is reliably limited, thereby avoiding overheating. High levels of heat energy may be delivered controllably to the samples, enabling a high evaporation rate to be achieved at relatively low temperature.

Classes IPC  ?

• B01D 1/26 - Évaporation à effet multiple
• B01D 3/08 - Distillation ou procédés d'échange apparentés dans lesquels des liquides sont en contact avec des milieux gazeux, p. ex. extraction dans des récipients en rotationAtomisation sur disques tournants
• B01D 3/10 - Distillation sous vide
• B01D 3/30 - Colonnes de fractionnement à pièces mobiles ou dans lesquelles est produit un mouvement centrifuge
• B04B 5/02 - Centrifugeurs constitués par plusieurs tambours indépendants tournant autour d'un axe situé entre les tambours
• B04B 5/04 - Appareils à chambre radiale pour séparer des mélanges essentiellement liquides, p. ex. butyromètres

Produits et services

VACUUM PUMPS, NAMELY COLE PRINCIPLE PUMPS, ROTARY VANE PUMPS, VAPOR VACUUM PUMPS, SOLVENT DRAIN PUMPS, SOLVENT WASTE PUMPS; CENTRIFUGES; AIR COMPRESSORS; CRYOPUMPS SCIENTIFIC APPARATUS AND INSTRUMENTS, NAMELY TEMPERATURE PROBES, PRESSURE CONTROLLERS, LABORATORY APPARATUS FOR OPERATING VOLATILE SOLVENTS, NAMELY SAMPLE HOLDERS FOR TUBES, VIALS AND MICROTITRE PLATES, FAST-STACK SAMPLE HOLDERS, SOLID ALUMINUM SAMPLE HOLDERS, DEEP AND SHALLOW WELL PLATES; PROGRAMMABLE COMPUTER BASED CONTROL SYSTEMS FOR SCIENTIFIC APPARATUS AND INSTRUMENTS COMPRISED OF DISPLAY SCREEN, CONTROL PANEL, MICROPROCESSOR, AND GRAPHICAL USER INTERFACE SOFTWARE; LAMINAR FLOW BIOLOGICAL SAFETY CABINET HOODS FOR LABORATORY USE; OVENS FOR LABORATORY USE; CENTRIFUGAL SEPARATORS; CONDENSERS, NAMELY CONTINUOUS RUNNING CONDENSERS, SOLVENT WASTE CONDENSERS, EXHAUST CONDENSERS, TRIPLE CHAMBER EXTERNAL CONDENSERS; LABORATORY FUME HOODS, MOBILE FUME HOODS FOR LABORATORY USE INFRA-RED LAMPS; CENTRIFUGAL EVAPORATORS

Produits et services

feature of scientific apparatus and instruments, namely apparatus for evaporating volatile liquids; centrifugal, rotary, vortex and nitrogen blow-down evaporators; laboratory apparatus for evaporating volatile solvents; programmable computer-based control systems, composed of one or more transducers for measuring operating characteristics of such scientific apparatus and instruments and electrical actuators for controlling and said operating characteristics; memories for storing a computer program and measurements for the one or more transducers; and computers for executing the computer program so as to control the one or more actuators, for such scientific apparatus and instruments; parts for all the aforesaid goods

Produits et services

Vacuum pumps. Scientific apparatus and instruments; laboratory apparatus for evaporating volatile solvents; programmable computer based control systems for scientific apparatus and instruments; centrifuges; condensers, evaporators, apparatus for evaporating volatile liquids; centrifugal, rotary, vortex or nitrogen blow-down evaporators; apparatus including vacuum pumps, with or without centrifuging apparatus, and with or without condensing apparatus, all for evaporating volatile liquids; any of the aforesaid in combination with gas removal and/or collection apparatus; parts and fittings for all the aforesaid goods. Printed matter and publications relating to centrifugal evaporation.

Produits et services

Vacuum pumps and parts and fittings therefor. Scientific apparatus and instruments; laboratory apparatus for evaporating volatile solvents; programmable computer based control systems for scientific apparatus and instruments; centrifuges; condensers, evaporators, apparatus for evaporating volatile liquids; centrifugal, rotary, vortex or nitrogen blow-down evaporators; apparatus including vacuum pump, with or without centrifuging apparatus, and with or without condensing apparatus, all for evaporating volatile liquids; any of the aforesaid in combination with gas removal and/or collection apparatus; parts and fittings for all the aforesaid goods.