Fully operational dry (no liquid helium needed) dilution refrigerator (DR) with gas handling system and computer control. Turn-the-key delivery: all equipment needed to run the system as well as all needed supporting structures, floor mounts, etc. delivered with the system. Required helium-mixture should also be included. Base temperature must be below 10 mK with all factory installed wiring and the cooling power at 20 mK should be 14 μW or higher. Contracting authority (JYU) may suspend the procurement procedure if the tenders exceed the budget available for the procurement. Prior references of supplying comparable systems are required.

Fully operational dry (no liquid helium needed) dilution refrigerator with gas handling system and computer control. Turn-the-key delivery: all equipment needed to run the system as well as all needed supporting structures, floor mounts, etc. delivered with the system. Installation and testing of the system at installation location should be included. Required helium-mixture should also be included. There should be automated (computer controlled) cool down and warm up procedures with possibility to switch system to manual control. Temperature PID control below 100 mK must be able to maintain less than 1 mK accuracy of the temperature. Base temperature must be below 10 mK with all factory installed wiring and the cooling power at 20 mK should be 14 μW or higher, at 100 mK 400 μW or higher and at 4,2 K 1,8 W or higher. Cool down time should not exceed 24 hours.