THICKNESS
Purpose of the test
This test is performed to determine the thickness of paper, solid board or folding board, it is not intended for corrugated board or non-paper materials.
Procedure
Operate the instrument in accordance with ISO 534 and the manufacturer’s instructions. Perform one measurement in the centre of each single test piece.
Leave the samples exposed for 24 h to 23°C and 50% R.H., according to ISO 187.
Report 10 measures in µm, their mean and standard deviation calculated to 3 significant figures.
ISO 534
Nr. of samples
12 test pieces per level
Sample size 100 x 100 mm²
Special size A4
Levels
Level 1: 45.0÷55.0 µm
Level 2: 70.0÷80.0 µm
Level 3: 200÷250 µm
Level 4: 500÷600 µm
Reporting
Report 10 valid results of measurements in µm, their mean and their standard deviation. All to three significant digits.
Cepi test 1.1
