BS ISO 5350-4-2006 纸浆.尘埃和纤维素的估计.用等值黑色面积(EBA)法反射光的检验仪器

标准号：BS ISO 5350-4-2006
中文标准名称：纸浆.尘埃和纤维素的估计.用等值黑色面积(EBA)法反射光的检验仪器
英文标准名称：Pulps - Estimation of dirt and shives - Instrumental inspection by reflected light using equivalent black area (EBA) method
标准类型：Y31
发布日期：2006/10/31 12:00:00
实施日期：2006/10/31 12:00:00
中国标准分类号：Y31
国际标准分类号：85.040
适用范围：This part of ISO 5350 specifies a method using instrumental inspection by reflected light for the estimation of visible dirt and shives in pulp manufactured in sheets, in terms of Equivalent Black Area (EBA) of dirt specks within the physical area range of 0,02 mm2 to 3,0 mm2. Using the algorithm prescribed in this part of ISO 5350, the maximum dirt size is limited to 3,0 mm2. Extension to other speck sizes (for example, those greater than 3,0 mm2 in physical area) may require changes in equipment, calculation procedures, or both, and is not covered in this part of ISO 5350. This part of ISO 5350 cannot be used for physical area measurements, since it may not correctly measure the dirt specks for that mode of measurement. The specimen to be evaluated should have a brightness, as determined by ISO 3688, of 30 % or greater. It may be necessary to reform some pulp sheets into laboratory sheets, if the surface is too rough or textured. This part of ISO 5350 is also intended for recycled pulp.