germany-hamburg: laboratory, optical and precision equipment (excl. glasses)./ delivery, construction and commissioning of 1 piece 3he/4he mixed cooling machine./ delivery, construction and commissioning of 1 piece 3he/4he mixed cooling machine consisting of: · 1 piece of mixing cooling machine according to specifications · 1 piece compressor for ptr used in cryostat use with flexible pressure lines for high and low pressure side (length ≥20 m) · 1 piece rotary valve for ptr used in cryostat use with flexible pressure line (with electrical insulation) to the ptr head and lines for the electrical supply or control (length ≥20 m) 1 piece gas handling and control system (ghcs) for 3he/4he mixed chiller · documentation for the exact deion, please refer to the service deion, specification and supplementary contractual conditions