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Full Description

ISO 22891:2013 specifies a method for the calculation of transmittance based upon diffuse reflectance measurements.

The use of the method is restricted to white and near-white translucent papers (see 3.9). If it is necessary to determine the transmittance of papers which contain fluorescent whitening agents, the fluorescence emission is eliminated using the prescribed UV cut-off filter.

 

Document History

  1. ISO 22891:2013

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    Paper - Determination of transmittance by diffuse reflectance measurement

    • Most Recent
  2. ISO 22891:2007


    Paper - Determination of transmittance by diffuse reflectance measurement

    • Historical Version