Pulp and Paper | Rotational Viscosity Testing of Paper Mills with ViscoQC

The ViscoQC 100/300 is suitable for viscosity tests according to the TAPPI standard T648 and T697. TAPPI publishes test methods for quality control of pulp and paper manufacturing.

TAPPI (Technical Association of the Pulp and Paper Industry) is a non-profit organization with members in the pulp and paper industry. They publish standards including test methods for quality control of pulp and paper manufacturing.

The viscosity is one of the parameters which is checked during manufacturing. A rotational viscometer like ViscoQC 100/300 can be used for a compliant measurement according to T648 and T697. Both standards describe a test method for a “low-shear viscometer” like ViscoQC. For testing the high-shear rate viscosity another instrument type is necessary.

The standard T648 describes a test method for paper coats. A proper viscosity of paper coats assures convenient coating with a uniform and nice finish.

The standard T697 describes a test method for analyzing the stability of clay slurries. It is necessary to maintain a low-viscosity for a certain period of time because otherwise it cannot be pumped anymore with slurry-handling equipment. 

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