// standards

The standards these tests are judged against.

Every standard cited across the reference, grouped by publisher. Each links to the publisher's store; the larger ones have their own page listing the tests and forms that cite them.

Every test has a signature trace on the instrument; these six open the main families.

NETA

Acceptance Testing Specifications for Electrical Power Equipment and Systems

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Maintenance Testing Specifications for Electrical Power Equipment and Systems

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ASTM

ASTM D1500

Standard Test Method for ASTM Color of Petroleum Products (ASTM Color Scale)

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ASTM D1524

Standard Test Method for Visual Examination of Used Electrical Insulating Liquids in the Field

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ASTM D1533

Standard Test Method for Water in Insulating Liquids by Coulometric Karl Fischer Titration

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Standard Test Method for Dielectric Breakdown Voltage of Insulating Oils of Petroleum Origin Using VDE Electrodes

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ASTM D923

Standard Practices for Sampling Electrical Insulating Liquids

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ASTM D924

Standard Test Methods for Dissipation Factor (or Power Factor) and Relative Permittivity (Dielectric Constant) of Electrical Insulating Liquids

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ASTM D971

Standard Test Method for Interfacial Tension of Insulating Liquids Against Water by the Ring Method

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ASTM D974

Standard Test Method for Acid and Base Number by Color-Indicator Titration

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ANSI

ANSI C12.1-2026

ANSI C12.1-2026

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