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      This procedure applies to the verification of swirl/spin Viscosity meter, including first verification, follow-up verification and in-use inspection. The standard takes NDJ series, Brookfield series, etc. as an example, and stipulates the method of verification of relative method. By comparing the viscosity value of the standard solution, the measurement accuracy and Reliability of Viscosity meter are ensured.

      This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
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