PIN: Table-top QHR standard (only fridge and graphene sample)

Concepts

• teddington
• precision equipment
• table-top qhr standard
• a table-top qhr standard
• top
• sample
• fridge
• graphene
• qhr
• table

Location

Teddington, UK

Description

This is a Prior Information Notice for Table-top QHR standard (only fridge and graphene sample). The National Physical Laboratory requires a Table-top QHR standard (only fridge and graphene sample).

Total Quantity or Scope

A refrigerator for the operation of a Cryogenic Current Comparator (CCC)/Squid system at 4 K. The system should provide an experimental space of minimum size 15 cm diameter by 20 cm height, with a temperature stability of ±5 mK or better, and a supplied cooling power at base temperature of at least 0.5 W. The experimental space can be either in vacuum or immersed in self-condensed liquid helium, but the system must require no liquid helium to be supplied for either cool-down or regular running. The system should be designed for continuous operation for periods of at least 6 months.

CPV Codes

• 38000000 - Laboratory, optical and precision equipments (excl. glasses)

Indicators

• Bids should cover the whole contract.
• Award on basis of price and quality.