This standard provides a unified test method for determining the resistivity of acetylene carbon black, aiming to evaluate and characterize its conductive performance in batteries or conductive composite materials through this key indicator. The core technique involves first mixing the carbon black sample with dibutyl phthalate to form a homogeneous test slurry, followed by the measurement of its resistivity. The methods specified in the standard are divided into Method A and Method B, and the main detection instruments involved include direct current low-resistance testers for precise measurements, specialized resistivity testers, and corresponding measurement cells. Compared with the previous version, this revision primarily adds Method A and its data processing steps, while updating the relevant equipment requirements.