This Part of EN ISO 5350 specifies the method for the estimation by transmitted light of the visible dirt and shives in laboratory sheets prepared from pulp. It is applicable to all kinds of pulp, though it is mainly intended for pulp that is not manufactured in sheet form.
Part 2 of this European Standard deals with the estimation of dirt and shives in mill sheeted pulp.
This part can also be applied to mill sheeted pulp if the sheets have high grammage or are very opaque for other reasons, in which case Part 2 is not applicable.
This European Standard is not intended for recycled pulp.
For inspection of pulp with a high dirt count the procedure described in Annex C shall be applied.
NOTE: Shives in mechanical pulp are usually determined by means based on screening or optical analyses. Some grades of mechanical pulps can cause problems in sheet-making or inspection, which makes this European Standard impractical.
ISO 5350-1:1998 history
2006ISO 5350-1:2006 Pulps - Estimation of dirt and shives - Part 1: Inspection of laboratory sheets by transmitted light
1999ISO 5350-1:1998/Cor 1:1999 Pulp - Estimation of dirt and shives - Part 1: Inspection of laboratory sheets; Technical corrigendum 1
1998ISO 5350-1:1998 Pulp - Estimation of dirt and shives - Part 1: Inspection of laboratory sheets
1982ISO 5350-1:1982 Pulps; Estimation of dirt and shives; Part 1 : Unbleached chemical pulps