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TAPPI T 265 cm-09

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TAPPI T 265 cm-09 Natural Dirt in Wood Chips

standard by Technical Association of the Pulp and Paper Industry, 01/01/2009

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$21.56

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$49.00

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The purpose of this method is to estimate the amount of natural (wood-derived) dirt in chips. The amount of dirt inthe chips may be reflected in the level of dirt in the finished pulp or in bleaching and screening steps needed to producean acceptable product. The determination is made by examining and classifying chips into categories defined by theultimate contribution to dirt levels in the final product. For sulfite pulps from certain species, a dirt contribution valuestable (Table 1) is provided, which allows the results to be expressed in terms of an index based on square millimeters orequivalent area of black dirt. (See TAPPI T 213 "Dirt in Pulp.")

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Published: 01/01/2009 Number of Pages: 8File Size: 1 file , 450 KB