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.

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.

The present invention is an article or device to facilitate the heating of rounded vessels and other rounded objects comprising a flexible polymeric support having a plurality of folds so as to form the flexible polymeric support into a plurality of nested, concentric hollow cylindrical portions whose respective upper edges can be arranged and fixed into two or more configurations to accommodate at least two respective spherical section contours of respective different sizes. The present invention facilitates the heating of rounded, regularly-shaped or irregularly-shaped vessels or objects by presenting a flexible polymeric support surface. The flexible polymeric support surface is sufficiently malleable so as to be adapted for heating such objects or containers, and may be incorporated into an arrangement or system for heating such a container or object, and/or for stirring its contents, while being supported by the article or device of the present invention.

The present invention is an article or device to facilitate the heating of rounded vessels and other rounded objects comprising a flexible polymeric support having a plurality of folds so as to form the flexible polymeric support into a plurality of nested, concentric hollow cylindrical portions whose respective upper edges can be arranged and fixed into two or more configurations to accommodate at least two respective spherical section contours of respective different sizes. The present invention facilitates the heating of rounded, regularly-shaped or irregularly-shaped vessels or objects by presenting a flexible polymeric support surface. The flexible polymeric support surface is sufficiently malleable so as to be adapted for heating such objects or containers, and may be incorporated into an arrangement or system for heating such a container or object, and/or for stirring its contents, while being supported by the article or device of the present invention.

A multi-pass distillation system has a boiling flask with a side exit portal which is functionally connected to a condenser, which is, in turn, functionally connected to one or more cold traps. The condenser condenses wet vapors into liquid while the cold traps protect a pump which is used to suction the air through the system from the boiling flask through the condenser and cold traps. In this manner, one can more accurately collect fractions by way of a sideways exit from the boiling flask, near the top of the flask, with a condenser extending into a body of the spherical flask, such as at a 45 degree angle.

A multi-pass distillation system has a boiling flask with a side exit portal which is functionally connected to a condenser, which is, in turn, functionally connected to one or more cold traps. The condenser condenses wet vapors into liquid while the cold traps protect a pump which is used to suction the air through the system from the boiling flask through the condenser and cold traps. In this manner, one can more accurately collect fractions by way of a sideways exit from the boiling flask, near the top of the flask, with a condenser extending into a body of the spherical flask, such as at a 45 degree angle.

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.

A multi-pass distillation system has a boiling flask with a side exit portal which is functionally connected to a condenser, which is, in turn, functionally connected to one or more cold traps. The condenser condenses wet vapors into liquid while the cold traps protect a pump which is used to suction the air through the system from the boiling flask through the condenser and cold traps. In this manner, one can more accurately collect fractions by way of a sideways exit from the boiling flask, near the top of the flask, with a condenser extending into a body of the spherical flask, such as at a 45 degree angle.

This document provides a dual flask for laboratory use, methods of using a dual flask, and systems including a dual flask. A dual flask can include a first flask structure and a second flask structure. Each flask structure can include a body and a neck. The first body and the second body in a dual flask provided herein can be connected together and have a filter there between such that fluids can be filtered between said first and second bodies.