Constant-temperature equipment

Constant-temperature equipment comprising:

• a temperature-controlled chamber having a closed space surrounded by walls;
• a sample table arranged removably in the temperature-controlled chamber, the sample table carrying a sample shelf support for putting containers containing samples;
• an opening into the temperature-controlled chamber large enough to enable the sample table and the sample shelf support to be moved into the temperature-controlled chamber, and removed from the temperature-controlled chamber, without disassembling either the sample table or the sample shelf support;
• a plurality of driven magnets installed on the sample table;
• a plurality of driving magnets arranged correspondingly to positions of the driven magnets on the sample table;
• said driving magnets being installed outside a wall of the temperature-controlled chamber, said driving magnets being magnetically combined with the driven magnets;
• and
• means for generating a shifting magnetic field with the driving magnets,
• wherein the sample table is devoid of attachment to the chamber other than the magnetic attraction between the driven magnets and the driving magnets.