Abstract:
A method for the isolation of delta-9-tetrahydrocannibinol (THC) from Cannabis plant material, wherein delta-9-THC Acid and THC are separately obtained comprising the steps of extracting the Cannabis plant material, chelating delta-9-THC acid on alumina solid support from cannabis extracts rich in the acid washing of non-acid washing of non-acid components of the extract with organic solvents and eluting of the delta-9-THC acid with strong polar solvents. MThe method also includes a process by which to increase the THC content and decrease the weight of Cannabis extracts or residue from distillation of Cannabis extracts containing a low concentration of THC, comprising treatment of such materials with watermissible organic solvents followed by filtration and evaporation of the solvent to obtain the concentrated residue.
Abstract:
A condenser unit for use with a sample preparation device comprises and inner tube, a hollow outer sleeve, and a fluid conduit. The outer sleeve is coaxially disposed around the inner tube to define a condenser body. The fluid conduit is interposed between the inner tube and the outer sleeve. A first portion of the fluid conduit extends along an axial length of the condenser body and a second portion of the fluid conduit extends along a circumferential length of the condenser body. A stirrer assembly for stirring a substance in a container enables a quantity of the substance to be dispensed into and withdrawn from the container during a stirring operation. The stirrer assembly comprises a hollow stir rod, a hollow agitator element, and a fluid sampling instrument. The stir rod and agitator element cooperatively define a stirrer assembly interior, such that the fluid sampling instrument can be movably disposed therein. The condenser unit and stirrer assembly can be integrally combined to provide a condenser/stirrer device.
Abstract:
The invention concerns a device for sampling various volatile species traces present in a gaseous atmosphere for assay, comprising a cryogenic water trap (4) provided with a cooling circuit (16) whereon one inlet end (17) is connected to a cryogenic condenser (5) cooling circuit (30) output end (41), such that the same cryogenic fluid successively passes through the cryogenic condenser (5) cooling circuit (30) and the water trap (4) cooling circuit (16).
Abstract:
The invention concerns a device for liquid heat treatment, in particular in a laboratory, whereby there is little liquid loss by evaporation and which has a simple structure and is relatively inexpensive. Such a device is obtained by inserting a displacing body in a container heated in its lower region, for example a reaction tube, from above, in the zone of a container cylindrical, prismatic or conical section, thereby generating a narrow void space which encloses the body, and said container section is enclosed by a cooling block provided with a corresponding passage. The displacing body forces the vapour rising at the liquid surface to enter said narrow void space, thereby bringing about efficient cooling by the cooling device and condensation on the container inner wall, the condensate on the container inner wall filling it.
Abstract:
Die vorliegende Anmeldung betrifft eine Kopplungsvorrichtung (1) zur Kopplung einer thermogravimetrische Analyse mit einer spektroskopischen Analyse, umfassend ein Gehäuse (2) mit einem Verbindungselement (3), mit welchem sich das Gehäuse (2) gasdicht und lösbar mit einem Probenraum (24) einer Vorrichtung zur thermogravimetrischen Analyse (20) verbinden lässt. Die Kopplungsvorrichtung verfügt über mindestens zwei Flanschbuchsen (4; 4.1, 4.2, 4.3, 4.4) oder über mindestens zwei Adsorptionselemente (27.1, 27.2, 27.3), welche lösbar mit der Kopplungsvorrichtung (1) verbunden sind und welche auf einer ersten Seite eine Kondensationsfläche (10; 10.1, 10.2, 10.3, 10.4) beziehungsweise über einen Adsorptionskörper (29.1, 29.2, 29.3) für gasförmige Komponenten aufweisen. Eine Blende (5) ist derart an der Kopplungsvorrichtung (1) angeordnet, dass diese zwischen den mindestens zwei Flanschbuchsen (4; 4.1, 4.2, 4.3, 4.4) beziehungsweise den mindestens zwei Adsorptionselementen (27.1, 27.2, 27.3) und dem Probenraum (24) liegt, wobei die Blende (5) wenigstens eine Öffnung (6) aufweist. Mit einer Wechselvorrichtung (7) lassen sich die mindestens zwei Flanschbuchsen (4; 4.1, 4.2, 4.3, 4.4), die mindestens zwei Adsorptionselemente (27.1, 27.2, 27.3) oder die Blende (5) derart bewegen, dass die Kondensationsfläche (10; 10.1, 10.2, 10,3, 10.4) wenigstens einer Flanschbuchse (4; 4.1, 4.2, 4.3, 4.4) oder ein Adsorptionskörper (29.1, 29.2, 29.3) wenigstens eines Adsorptionselements (27.1, 27.2, 27.3) der wenigstens einen Öffnung (6) gegenüberliegt. Über eine Kühlvorrichtung (19) lassen sich die Kondensationsflächen (10; 10.1, 10.2, 10.3, 10.4) der mindestens zwei Flanschbuchsen (4; 4.1, 4.2, 4.3, 4.4) kühlen.
Abstract:
L'invention concerne un dispositif (100) de piégeage de tritium contenu sous forme de vapeur d'eau tritiée dans un flux d'air (F), comprenant - un organe de prélèvement (200) d'un flux d'air, et - un condenseur (300), adapté pour condenser la vapeur d'eau contenue dans le flux d'air, le condenseur comprenant un réservoir (310) fermé, une entrée d'air (320) reliée à l'organe de prélèvement d'air, un moyen de refroidissement (330) de l'air prélevé, et un canal de sortie d'air (340), le dispositif de piégeage étant caractérisé en ce qu'il comprend en outre des moyens de récupération (310) de la quantité d'eau condensée, et en ce que l'entrée d'air du condenseur (320) comprend un canal rectiligne (321 ) s'étendant à l'intérieur du réservoir (310), et le moyen de refroidissement (330) de l'entrée d'air comprend au moins une canalisation de condensation (331 ) disposée autour du canal (321 ), et dans laquelle est injecté un liquide caloporteur à température négative.
Abstract:
An integrated condenser is described. This integrated condenser includes an outer surface region on a sampler surface that facilitates condensing at least a component in a received gas-phase sample into liquid-phase droplets on the sampler surface, and aggregating and moving the condensed droplets radially toward an inner surface region on the sampler surface that receives the condensed droplets. For example, the outer surface region may include a set of micro-patterned concentric rings, each of which includes a set of radially oriented wall-groove pairs. Moreover, the sampler surface may be increasingly less hydrophobic along a radial direction toward the center of the sampler surface, thereby creating an axisymmetric wettability gradient.
Abstract:
The invention relates to a device for drying a gas, in particular air, that comprises at least one chamber (5) with an inlet (5a) for the flow of gas to be treated and an outlet (5b) for the flow of treated gas, said chamber being limited by at least one membrane (6) having a water vapour perviousness that is significantly higher than the perviousness to other gases or vapours, a humidity absorbing material being provided or flowing against the membrane (6) on the side opposite the chamber. The device includes a stack of plates (P1, P2) provided with central openings (A, B); each chamber (5) is formed by a central opening (A) located between two parallel membranes (6) while the humidity absorbing material is provided against each membrane (6); each plate (P1) is sandwiched between two plates (P2, P3) including a housing (B, B1) for the humidity absorbing material; and a plurality of chambers (5) are stacked and connected in series.
Abstract:
An apparatus (10) and a method for concentrating and transferring volatile compounds contained in a sample on a detachable solid support (12) into a liquid for subsequent detection and/or analysis of the volatile compounds, are described. The apparatus comprises a holder (14) for the solid support (12), means (16) for transporting the holder (14) to a heating position on a heatable plate (18), a closed room-creating arrangement comprising the heatable plate (18) attached to a movable housing (30), the holder (14), the solid support (12), a funnel (20) on the solid support (12), and inside the funnel (20) a cold spot (22), means inside the housing (30) for heating the heatable plate (18) to evaporate the volatile compounds which then are condensed on the cold spot (22), means (24) for transporting the cold spot (22) from a cooler (26) to the inside of the funnel (20) and from there to a position (28) where condensed compounds are removed from the cold spot (22) into a liquid.