Paper and board. Determination of opacity (paper backing). Diffuse reflectance method has-corrigendum 9 on Water quality are

9 on Water quality are useful for:

Calibration can be done either by the vendor or in-house by a dew-point measurement

BS EN 1760-1 covers mats and floors designed to detect:

3 Qualification of valves by nominal size

measurement by instrumentation

Paper and board. Determination of opacity (paper backing). Diffuse reflectance method has-corrigendum 9 on Water quality are1 Scope This International Standard specifies a method for the determination of the opacity (paper backing) of paper by diffuse reflectance. It can be used to determine the opacity of papers or boards which contain fluorescent whitening agents, provided the UV content of the radiation incident on the test piece has been adjusted to conform to that in the CIE illuminant C using a fluorescent reference standard provided by an ISO TC 6 authorized