Over deze norm
Specifies the test method for the estimation by reflected light of the visible contraries in paper. Visual inspection is applicable to most kinds of paper and board. Paper and board with an appararently high content of contraries require to be inspected by instrumental means as described in Annex B, as the tedium of large counts diminishes the judges' precision.
|Nederlandse titel||Papier en karton - Schatting van de verontreinigingen|
|Engelse titel||Paper and board - Estimation of contraries|