ISO 22891
Paper - Determination of transmittance by diffuse reflectance measurement
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| Organization: | ISO |
| Publication Date: | 1 March 2013 |
| Status: | active |
| Page Count: | 18 |
| ICS Code (Paper and board): | 85.060 |
scope:
This International Standard specifies a method for the calculation of transmittance based upon diffuse reflectance measurements.
The use of the method restricted to white and near-white translucent papers. If it is necessary to determine the transmittance papers which contain fluorescent whitening agents, the fluorescence emission is eliminated using the prescribed UV cut-off filter.
NOTE This means that, although this International Standard refers to ISO 2469, which permits the use of both filter colourimeters and abridged spectrophotometers, a filter colourimeter with no means of eliminating the emission of fluorescence is not suitable for this type of measurement whitening agents are present.
Document History
ISO 22891
March 1, 2013
Paper - Determination of transmittance by diffuse reflectance measurement
This International Standard specifies a method for the calculation of transmittance based upon diffuse reflectance measurements.
The use of the method restricted to white and near-white translucent...
July 1, 2007
Paper — Determination of transmittance by diffuse reflectance measurement
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