Ophthalmic instruments. Trial case lenses Ingestion-build-224916 BS EN ISO 14021 describes

BS EN ISO 14021 describes selected terms commonly used in environmental claims and gives qualifications for their use

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Ophthalmic instruments. Trial case lenses Ingestion-build-224916 BS EN ISO 14021 describes1 Scope This International Standard specifies requirements for mounted ophthalmic full and or reduced aperture trial case lenses for the determination of the refractive error of the eye. This International Standard takes priority over ISO 15004 1, if differences exist.