Plastic dilution refrigerator for low-frequency transport measurements under rf drive.

Main characteristics:
• Base temperature: 70 mK
• Mixing chamber cooling power at 100 mK: approximately 50 uW
• 100 l liquid helium dewar for 3-4 weeks of continuous operation
• Cooldown time to base temperature: 10 hours
Measurement Circuitry:
• Sample holder with RC filters, with connections to up to 12 Thermocoax lines, and up to 4 rf lines with SMA connectors
• Superconducting magnet up to approximately 0.25 T
• Up to two layers of mu-metal magnetic shielding