NBN EN 20534 : 1994
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
PAPER AND BOARD - DETERMINATION OF THICKNESS AND APPARENT BULK DENSITY OR APPARENT SHEET DENSITY
01-07-2005
12-01-2013
Explains two methods of measuring the thickness of paper and board and of calculating the apparent bulk density or the apparent sheet density from the thickness determinations. Not applicable to corrugated fibreboard and, to certain soft papers. It should be noted that two alternative pressures are permitted in the pressure of 100 kPa plus or minus 10 kPa is preferred. Covers normative references, definitions, principle, apparatus, sampling, conditioning, preparations of test pieces, procedure, expression of results, precision and test report.
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