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Preparation of test pieces in EN 14719 (Pulp, paper andboard-Determinationof the DIPN content by solventextraction)
Posted Date:2026/1/13
5 Sampling
Wrap test pieces for test individually in aluminium foil. Avoid direct contact to plastic films. Use the test pieces without humidity-conditioning or drying.
6 Preparation of test pieces
Carry out the test in duplicate.
Cut (avoiding edges) a piece (approx. 5 g) of the paper, board or pulp test piece into test pieces with an area of approximately 2 cm2. At the same time weigh a specimen for determination of the dry content.
Accurately weigh (2,00 + 0,01) g of the prepared test piece into a 40 ml screw top vial, add 100 μl of internal standard stock solution (3.5) and allow it to soak in. Then add by measuring cylinder 25 ml acetone. Cap the vial and leave to stand for about 16 h at room temperature and then put the vials to the ultrasonic bath for 15 min.
Remove a small portion of the extract for analysis by GC-MS (Gas Chromatography Mass Spectrometry).