ISO/TS 23877-1:2023

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Petroleum and related products from natural or synthetic sources — Determination of pour point — Part 1: Automated step-wise cooling method

ISO/TS 23877-1:2023 is an international standard that specifies a method for determining the "pour point" of petroleum products using an automated, step-wise cooling technique to detect movement of the test specimen; essentially, it defines a standardized procedure to measure the lowest temperature at which a petroleum product will still flow freely.