Pulp and paper. Determination of the effective residual ink concentration (ERIC number) by infrared reflectance measurement Ingestion-build-183511 A high-quality testing clamp is

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Pulp and paper. Determination of the effective residual ink concentration (ERIC number) by infrared reflectance measurement Ingestion-build-183511 A high-quality testing clamp is1 Scope This International Standard specifies a method for the determination of the effective residual ink concentration (ERIC number) by infrared reflectance measurement. This International Standard is applicable to all types of deinked, recycled pulp and to sheets of machine made paper made from recycled pulp, where the residual ink is black. The method is applicable to materials available in sheet form only if the opacity at 950 nm is less than 97