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TAPPI
T 546 om-22
Machine-direction grammage variation measurement (gravimetric method)
2022
6
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This procedure can be used to determine the short term machine-direction variation in mass per unit
area. These variations can be caused by defects in the stock approach system, headbox, or consistency control. This
test method is not intended to identify the source of the variations, but rather to quantify them. The method has
particular application to acceptance testing of both the papermaking process and the product. ....