Guidelines for the standardization of methods for the determination of viscosity number and limiting viscosity number of polymers in dilute solution; Part 1 : General conditions

This international document outlines the standardized procedures for determining the viscosity of polymers in dilute solutions. It specifically addresses the general conditions required for such measurements, serving as a foundational guide for subsequent specific methods related to polymer characterization. The scope covers fundamental experimental parameters and conditions that ensure consistency and comparability of results across different laboratories and geographical locations. By establishing uniform protocols, this work facilitates the accurate measurement of both viscosity and intrinsic viscosity for polymer samples. These measurements are critical for understanding the molecular properties of polymeric materials. The document details the necessary apparatus, sample preparation techniques, and operational settings without prescribing specific values for all variables, allowing adaptation to different polymer types while maintaining methodological rigor. It represents a consensus-based approach developed through technical collaboration within the global standards community to harmonize testing practices for polymer fluids.