Sample container arrangement

A sample container arrangement comprising:

• a carrier defining a plurality of sample containers, the carrier being a first disk having a first circular cross-sectional area, and
• a tempering module, the tempering module being a second disk having a second circular cross-sectional area that is axially aligned with the first circular cross-sectional area of the carrier, the tempering module comprising a plurality of tempering elements disposed in vertical alignment with each of the plurality of sample containers, the tempering module being in contact with each of the plurality of sample containers of the carrier such that the plurality of tempering elements is configured to cool or heat of the plurality of sample containers,
• wherein the tempering module and the carrier defines a cavity therebetween, the cavity being disposed laterally adjacent to each of the plurality of sample containers,
• wherein the carrier is configured to rotate with the tempering module,
• wherein the the carrier is kept in contact with the tempering module by negative pressure in the cavity relative to ambient pressure external to the sample container arrangement, said negative pressure being maintained even when the carrier rotates with the tempering module,
• wherein each of the plurality of sample containers define a first side configured to receive a sample and a second side opposite to the first side, the second side being in contact with the tempering module,
• wherein the negative pressure is created by a vacuum pump connected to the cavity through the tempering module.