Tenders of Universit T Potsdam

Production and Hosting Massive Open Online Course

The subject of the procedure is the procurement of a thermomixer and thermoblock for carrying out enzyme assays. The thermomixer must have the following specifications/parameters: - Speed: At least 600 rpm, - Temperature range: At least 20 to 100°C, - Timer, adjustable with at least 96 hours, - Compatible with blocks for different sample capacities for all conventional vessels with a sample volume of 1.5 to 5 ml. The thermoblock must have the following specifications/parameters: - Different sample capacities from 1.5 to 5 ml, - Sample volumes of 1.5 ml At least 21 places for reaction vessels

The subject of the procedure is the procurement of a ball mill for the contamination-free preparation of solid samples for the analysis of trace elements using an X-ray fluorescence spectrometer, an ICP-MS or other analysis devices. Since the sample quantities can vary in size, grinding vessels of different sizes, including grinding balls of different sizes, are required. The ball mill, including accessories, must meet the following specifications/parameters: - Speed: Variable, at least between 100 and 650 min-1, - Final fineness: Up to 0.1 Μm, - Grinding programs: At least 10 standard grinding programs can be saved, - Dry and wet grinding must be possible, - Voltage: 230 V, 50/60 Hz, - Power failure: The device must be protected against power failure Compatible grinding bowls - Size: 50 ml and - Size: 500 ml Suitable grinding balls: - Consisting of: Agate - Ø 20 mm, - Ø 30 mm - Ø 7 mm Installation, commissioning, training

The subject of the procedure is the procurement of a 60x objective for the existing Olympus Ix73 microscope. The objective serves to expand the current working area.

The subject of the procedure is the procurement of a turntable kit for existing field spectrometers (fieldspec 4 standard-res; 1.5m fiber optic) for determining a highly accurate mean value when analyzing irregularly shaped or inhomogeneous plant and soil samples. To ensure compatibility with the connection of the existing field spectrometers (fieldspec 4 standard-res; 1.5m fiber optic), only a turntable kit from the manufacturer Malvern Panalytical GmbH comes into consideration.

Maintenance of a laboratory dishwasher Miele Pg8583cd D Ae-ww-ad-cm, serial number 184642301 Error pattern: - After the wash cycle, a milky, cloudy film remains on the glassware, which cannot be removed even by rinsing with deionized water - The union nut of the suction pipe for the neutralizing agent is torn

This tender is intended to award a contract for a hot drinks machine at each of two university locations (Golm and Griebnitzsee) for a period of 2 years with two options for a further year each (maximum term 4 years). The aim is to improve the supply of drinks at the University of Potsdam.

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Production of wooden boxes of different sizes in different colors, which are suitable for sitting.