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1.1 ,This test method covers the determination of the dilute solution viscosity of vinyl chloride polymers in cyclohexanone. The viscosity is expressed in terms of inherent viscosity (logarithmic viscosity number). The test method is limited to those materials that give clear, uniform solutions at the test dilution.
Note 1: ,Other expressions for viscosity may be used as described in the Appendix, but any change from the test method as specified shall be stated in the report.