標(biāo)準(zhǔn)號：ISO 5350-2-2006
中文標(biāo)準(zhǔn)名稱：紙漿.污物和碎片測定.第2部分:用傳輸光檢測磨碎片狀紙漿
英文標(biāo)準(zhǔn)名稱：Pulps - Estimation of dirt and shives - Part 2: Inspection of mill sheeted pulp by transmitted light
標(biāo)準(zhǔn)類型：Y30
發(fā)布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標(biāo)準(zhǔn)分類號：Y30
國際標(biāo)準(zhǔn)分類號：85.040
引用標(biāo)準(zhǔn)：ISO 638;ISO 7213
適用范圍：This part of ISO 5350 specifies a method for tne estimation by transmitted light of the visible dirt and shives in pulp manufactured in sheets.It does not apply to unbleached kraft pulps or to any other sheeted pulps that are too opaque to allow for the estimation of the minimum size or for minimum contrast specks to be counted, in accordance with this part of ISO 5350. The maximum grammage for most pulp sheets is in the range 800 g/m2 to 1 000 g/m2.If the sheets of the mill sheeted pulp have high grammage or are very opaque for other reasons, ISO 5350-1 should be applied.NOTE For thick sheets, with highly textured surfaces and/or with density variations, wetting the sheet will causeoptical variations, called lens distortions, that will distort the perceived size of a dirt speck, thus reducing the precision of the size estimation. Alternatively, use ISO 5350-1 to disintegrate the sheet and to prepare laboratory sheets for the size estimation.This part of ISO 5350 is not intended for recycled pulp.