The GR 1404-A 1000 pF (1 nF) Standard Capacitor is the standard of choice in metrology labs and is used by standards labs worldwide. These capacitors have been designed as primary reference standards for capacitance, against which working standards can be compared. In addition to capacitance, the GR 1404-A 1000 pF Standard Capacitors, combined with an accurately known external resistor, serve as a standard for dissipation factor. All critical parts of the plate assembly are made of Invar for stability and low temperature coefficient. After heat cycling and adjustment, the assembly is mounted in a heavy brass container, which, after evacuation, is filled with dry nitrogen under pressure slightly above atmospheric and sealed. The container is mounted on an aluminum panel and protected by an outer aluminum case. Each capacitor is subjected to a series of temperature cycles to determine hysteresis and temperature coefficients and to stabilize the capacitance.

• The item is in good condition, tested and verified to meet the manufacturer's specifications.
• The bridge, test fixtures, and cables shown in the photos are not included in the sale.