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DIN 28131 PDF

February 17, 2019

DIN Agitators and baffles for agitator vessels; types, terms and main dimensions. Find the most up-to-date version of DIN at Engineering Standards. DIN Agitators and baffles for agitator vessels; types, terms and main dimensions. Title (German). Rührer und Stromstörer für Rührbehälter;.

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Look at this page. For the temperature measurement, a PT resistance thermometer was used.

An agitator according to claim 1 for use in a bioreactor having an inner diameter which is concentric to the axis of rotation, wherein the agitator has a diameter equal to the smallest circle concentric to the axis of rotation that fully encircles the agitator blades and the ratio of the agitator diameter to the diameter of the bioreactor is 0. Agitators and baffles for agitator vessels; types, terms and main dimensions Article no: Your browser does not currently support JavaScript.

The media osmolality 0. Materials handling equipment Domestic and diin equipment.

An agitator according to claim 1, wherein the agitator rin two to eight agitator blades. An agitator blade 1 may consist of equally large segments 5with different angles of attack.

A stirred-tank fermenter dinn a working volume of 10 l is used for culturing a CHO cell line. The direction of rotation was chosen to be anticlockwise. Textile and leather technology It represents a series of agitator types which are often used in practice. Continuous curve high solidity hydrofoil impeller. Subscribe on standards with our subscription service. The fermentation system is charged with 10 l of deionized water after installation of the gas-introduction and agitator element under test.

BACKGROUND OF THE INVENTION

Agitators also prevent the cells from sedimenting and thus being inhomogeneously distributed during the fermentation. The oxygen transport coefficient was determined by the saturation method.

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You have no items in your shopping cart. Temperature, Pressure and pH Measurement: PDF – Immediate download – Read more djn SIS Subscriptions.

The mixing time was measured using a turbidity measurement system with milk as tracer all other conditions similar to the k L a value determination.

This has hydrodynamic properties coalescence behaviour, oxygen saturation concentration similar to the medium.

DIN 28131:1992-09

Petroleum and related technologies To produce the culture medium, the individual constituents are supplemented in heated purified water type 2 in a sterile vessel. It represents a series of agitator types which are often used in practice.

Would you like to know more? The change in turbidity was followed by the turbidity probe installed in the probe ring and displayed on the compensation recorder. The agitator has a diameter equal to the diameter of a circle concentric to the axis of rotation and encircling the agitator blades. The pH and temperature were measured in the fermentation system by probes installed in the probe ring. Technical standards updating Do you want to make sure you use only the valid technical standards?

The category – similar standards: The agitator has a blade mount configured and dimensioned to receive the agitator shaft and being further configured and dimensioned so as to hold a plurality of agitator blades radially with respect to the axis of rotation. An agitator according to claim 9, wherein the agitator blade has a height measured parallel to the axis of rotation equal to the distance from the end of the upper segment not in contact with another segment to the end of the lower segment not in contact with another segment, wherein the ratio of the height of the agitator to the agitator diameter is 0.

High efficiency mixer impeller. Agitators in bioreactors are essentially used to equalize temperature differences and differences of concentrations of various constituents.

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Above and beneath such an agitator, flow vortices are formed, which result in a high dispersion effect. Such an agitator generates a flow radial to the agitator axis. Usually, a cylindrical vessel is used. After three experiments the pO 2 electrode was recalibrated, and during long use of the same medium, the osmolality was checked daily. Contact us svenska Login. The agitator blade could also have the shape 281331 a cylindrical section or be bent once or several times to achieve the inventive angle of attack.

Its accuracy is tested during sterilization and at prescribed time intervals during fermentation by a contact thermometer Type CS The dissolved oxygen concentration increases to the saturation concentration of approximately 6. Reaction vessels and their components.

An agitator according to claim 1, wherein the acute angle of the dim segment and the acute angle of the lower segment are complementary. A second agitator is the inclined-blade agitator.

The inclined-blade agitator has primarily an axial transport direction with a radial component and therefore, achieves a highly effective mixing.

Agitator – Hoffmann-La Roche Inc.

By using the inventive inclined-blade agitator type 3, the k L a value could be increased by a factor fin between 1. Disc agitators are also disclosed in 2131 23 49 and DE 23 51 Do you want to make sure you use only the valid technical standards? SS-EN Expression of performance of fluorometric oxygen analyzers in liquid media. Subscribe on standards – Read more. Three 25 mm and two 19 mm Ingold ports are let into the vessel wall laterally.

The dimensions were as follows: