Vessel closure assemblies are provided. The vessel closure assemblies may be engaged with vessels. The vessel closure assemblies may each include a vessel closure, inserts such as anchors and fluid conduits extending through the vessel closure, and a respiratory assembly. The respiratory assembly may include a housing and one or more gas permeable membranes. The gas permeable membranes may be oriented substantially perpendicular to a top wall of the vessel closure through which the inserts extend.

Vessel closure assemblies are provided. The vessel closure assemblies may be engaged with vessels. The vessel closure assemblies may each include a vessel closure, inserts such as anchors and fluid conduits extending through the vessel closure, and a respiratory assembly. The respiratory assembly may include a housing and one or more gas permeable membranes. The gas permeable membranes may be oriented substantially perpendicular to a top wall of the vessel closure through which the inserts extend.

A flask stand is configured to support a flask and includes a base ring and a plurality of legs. The base ring is configured to support a lower portion of the flask. Each leg is secured to the base ring and extends outward from the base ring. Each leg includes a body, a lattice, and an elastomeric foot. The body includes a first end portion that is secured to the base ring with the foot portion being opposite the first end portion. The lattice is formed within the foot portion and includes a plurality of members that form an open-mesh frame that defines a plurality of voids between adjacent members of the frame. The elastomeric foot is formed of an elastomer and is disposed about the lattice and within the voids of the lattice. The foot is configured to engage a surface to support the body relative to the surface.

A laboratory flask for use in association with a laboratory heating block, having: a flask body, wherein the flask body includes an upper portion, a lower portion, and a sidewall, wherein the sidewall of the flask body includes an inner surface, and an outer surface; a neck, wherein the neck includes an upper portion, a lower portion, and a sidewall, wherein the sidewall of the neck includes an inner surface, and an outer surface, and wherein the neck emanates contiguously from the flask body; and a reservoir, wherein the reservoir includes an upper portion, a lower portion, a bottom wall, and a sidewall, wherein the sidewall of the reservoir includes an inner surface, and an outer surface, and wherein the reservoir is adapted for releasable securement within a laboratory heating block.

A laboratory flask for use in association with a laboratory heating block, having: a flask body, wherein the flask body includes an upper portion, a lower portion, and a sidewall, wherein the sidewall of the flask body includes an inner surface, and an outer surface; a neck, wherein the neck includes an upper portion, a lower portion, and a sidewall, wherein the sidewall of the neck includes an inner surface, and an outer surface, and wherein the neck emanates contiguously from the flask body; and a reservoir, wherein the reservoir includes an upper portion, a lower portion, a bottom wall, and a sidewall, wherein the sidewall of the reservoir includes an inner surface, and an outer surface, and wherein the reservoir is adapted for releasable securement within a laboratory heating block.

Disclosed herein are flask clamps that capture and firmly hold flasks or vessels of various shapes, enclosing the sidewall of the flask or vessel in a trap or loops. The trap relatively conforms to the profile of the perimeter of the vessel and are spring loaded in the upward direction in order to rise upward along the sides of the vessel. The loops pivot relative to the bottom of the flask creating an arc motion that tightens against the sidewall as it rises. The loaded loops are in tension against the flask, and the multiplicity of loops hold vessels in tension with opposing forces.

A flask stand is configured to support a flask and includes a base ring and a plurality of legs. The base ring is configured to support a lower portion of the flask. Each leg is secured to the base ring and extends outward from the base ring. Each leg includes a body, a lattice, and an elastomeric foot. The body includes a first end portion that is secured to the base ring with the foot portion being opposite the first end portion. The lattice is formed within the foot portion and includes a plurality of members that form an open-mesh frame that defines a plurality of voids between adjacent members of the frame. The elastomeric foot is formed of an elastomer and is disposed about the lattice and within the voids of the lattice. The foot is configured to engage a surface to support the body relative to the surface.

A composite article includes a lattice and an elastomeric section. The lattice includes a plurality of members that form an open-mesh frame defining a plurality of voids between the adjacent members of the frame. The elastomeric section is formed of an elastomer that is disposed about the lattice and within the voids of the lattice. The composite article may be a circular gasket, a gasket with a grip, a rectangular gasket, a vessel cap, a flask stand, and a handle for a hand tool.

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.

The invention provides an apparatus comprising a reactionware and an analytical device for analysing a reaction, the analytical device comprising at least a plurality of reaction sensors and the analytical device is configured for placement of a plurality of sensors in the reaction space of the reactionware, and optionally the reaction headspace of the reactionware, and the reactionware is a reaction flask having one or more necks, and the analytical device is held in a neck of the reaction flask.