A method and apparatus for determining a concentration of aerosol particles in a carrier gas. The method comprises providing an aerosol having aerosol particles in a carrier gas comprising at least one condensable component; introducing at least part of the aerosol into a chamber of a pressure-rated vessel, wherein the chamber is delimited by at least one wall adjoining the chamber and set to a temperature which is above a saturation temperature of the at least one condensable component; subsequently removing part of the aerosol from the chamber, as a result of which a decrease in pressure in the chamber occurs, as a result of which the at least one condensable component condenses at least partly on the aerosol particles; and determining a concentration of aerosol particles in the carrier gas during removal of the part of the aerosol from the chamber.

Treatment of wastewater and particularly relates to a technique for wastewater treatment using renewable energy (RE) which is sole solar energy (SE). In bench scale experiment, a device is constructed to consist of two fixed upper and lower glass Petri dishes. Another device consists of plastic containers and both devices with the same volume of wastewater in the upper and distilled water in the lower container. The first device is placed on the bench beside window to be exposed to sunlight at room temperature and the other device is put outdoors under direct sunlight during daytime. A build-up of small circular water droplets starts to appear on the external bottom of upper container. Water droplets are allowed to fall freely in the lower container, pH of droplets water is about 7.1. Yield of freshwater is at a rate of approximately 300 ml freshwater from 400 ml wastewater per 48 hours.

An analyser for collecting and analysing a breath condensate is disclosed. The analyser comprises a housing and a cartridge device (10). The device comprises a condensation zone (12) to condense exhaled breath from a subject and cooling means operably connected to the condensation zone (12). The device includes further discrete regions (13) for detection of analyte and measurement of analyte. The condensation zone (12) has a fluid exit connecting the condensation zone (12) to the discrete regions (13). The analyser includes a mouthpiece which is provided with a plurality of chambers configured to cause a change of 90° in the direction of the exhaled breath in order to trap saliva aerosols.

Treatment of wastewater and particularly relates to a technique for wastewater treatment using renewable energy (RE) which is sole solar energy (SE). In bench scale experiment, a device is constructed to consist of two fixed upper and lower glass Petri dishes. Another device consists of plastic containers and both devices with the same volume of wastewater in the upper and distilled water in the lower container. The first device is placed on the bench beside a window to be exposed to sunlight at room temperature and the other device is put outdoors under direct sunlight during daytime. A build-up of small circular water droplets starts to appear on the external bottom of upper container. Water droplets are allowed to fall freely in the lower container, pH of droplets water is about 7.1. Yield of freshwater is at a rate of approximately 300 ml freshwater from 400 ml wastewater per 48 hours.

A cartridge device (10) for collecting and analysing a breath condensate is disclosed. The device (10) comprises a condensation zone (12) to condense exhaled breath from a subject and cooling means operably connected to the condensation zone (12). The device includes further discrete regions (13) for detection of analyte and measurement of analyte. The condensation zone (12) has a fluid exit connecting the condensation zone (12) to the discrete regions (13).

An analyser for collecting and analysing a breath condensate is disclosed. The analyser comprises a housing and a cartridge device (10). The device comprises a condensation zone (12) to condense exhaled breath from a subject and cooling means operably connected to the condensation zone (12). The device includes further discrete regions (13) for detection of analyte and measurement of analyte. The condensation zone (12) has a fluid exit connecting the condensation zone (12) to the discrete regions (13). The analyser includes a mouthpiece which is provided with a plurality of chambers configured to cause a change of 90 in the direction of the exhaled breath in order to trap saliva aerosols.

The invention relates to a method (200) and an apparatus (110) for determining a concentration of aerosol particles (112) in a carrier gas (114), in particular for examining atmospheric aerosols (118) or as aerosol particle detector in process gases or in clean air rooms. The method (200) here comprises the steps: a) provision of an aerosol (118) which has aerosol particles (112) in a carrier gas (114) comprising at least one condensable component; b) introduction of at least part of the aerosol (118) into a chamber (120) of a pressure-rated vessel (116), wherein the chamber (120) is delimited by at least one wall (128), wherein the at least one wall (128) adjoining the chamber (120) is set to a temperature which is above a saturation temperature of at least one condensable component; c) subsequent removal of part of the aerosol (118) from the chamber (120), as a result of which a decrease in pressure in the chamber (120) occurs, as a result of which the at least one condensable component condenses at least partly on the aerosol particles (112); and d) determination of a concentration of aerosol particles (112) in the carrier gas (114) during removal of the part of the aerosol (118) from the chamber (120).

The invention can be suitable, in particular, for examining atmospheric aerosols, in particular aerosol particles, but can also be used as aerosol particle detector in process gases or in clean air rooms.

A cartridge device (10) for collecting and analysing a breath condensate is disclosed. The device (10) comprises a condensation zone (12) to condense exhaled breath from a subject and cooling means operably connected to the condensation zone (12). The device includes further discrete regions (13) for detection of analyte and measurement of analyte. The condensation zone (12) has a fluid exit connecting the condensation zone (12) to the discrete regions (13).

The invention relates to a method and device for measuring the dew point of humid gases, and more particularly to determining the humidity of gas mixtures according to the dew point, and can be used in all fields in which measurements of this sort are required. The claimed device is capable of determining a dew point in a range of from +45 C. to +95 C., which corresponds to a moisture content of from 65 to 3000 g of water per 1 kg of dry air. The device performs continuous measurement. The essence of the invention is that the claimed method for measuring dew point consists in determining the point of a sudden change in the temperature gradient along a tubular cooler through which the humid gas under examination is passed, and calculating the temperature at which this change takes place. The tubular cooler is cooled by the surrounding air. The device has a generator for generating an output signal that transmits information about the parameters of the gas to external systems and that can be used as an input signal for a moisture content regulator. The device can be equipped with a digital indicator for displaying the gas parameters obtained.

A method for measuring the purity of a glycol sample includes measuring the purity of the glycol sample via gas chromatography, measuring the purity of the glycol sample via evaporation, measuring the purity of the glycol sample via titration, and comparing the purity of the glycol sample from gas chromatography, evaporation, and titration to obtain an accurate purity. A system for measuring the purity of a glycol sample in a pipeline includes at least one type of testing equipment connected to the pipeline via at least one test line and an interfacial online data processor in communication with the at least one type of testing equipment. The at least one type of testing equipment includes a gas chromatography instrument, an evaporation instrument, and a titration instrument.