Andeen‑Hagerling represents the top tier of precision capacitance measurement—its instruments are used wherever standard LCR meters can no longer achieve the required accuracy.

Andeen‑Hagerling, Inc. is a U.S.-based company specializing in high-precision measurement of electrical quantities, particularly capacitance and dissipation factor (tan δ). The company is globally recognized for its ultra-precise capacitance bridges (e.g., the AH 2700 series), which are considered reference-grade instruments in the field.

Significance in metrology:

• Ranked among the leaders in precision capacitance metrology (with resolution down to the attofarad level).
• Their instruments are used as reference or standard devices in national metrology institutes, calibration laboratories, and research environments.
• They have significantly contributed to the development of methods for measuring extremely small changes in capacitance and losses, which are critical for materials research.

Typical applications:

• characterization of dielectric materials (insulators, ceramics, polymers)
• semiconductor and nanotechnology research
• calibration of capacitance standards
• sensors (pressure, position, humidity) - detection of extremely small capacitance changes
• cryogenic and physical experiments (e.g., studying material properties at low temperatures)

Company website: http://www.andeen-hagerling.com