ISO 14632:2021 pdf download – Extruded sheets of polyethylene (PE-HD) — Requirements and test methods. 6.1.2 Conditioning All test specimens shall be conditioned for at least 16 hours in accordance with ISO 291. Shorter conditioning times shall be used by agreement between the interested parties when it can be shown that there is no significant difference in the results obtained. 6.1.3 Testing Testing shall be carried out in accordance with ISO 291, unless agreed differently between the interested parties or specified differently in the individual testing standards. 6.2 Delivery condition Sheets should be visually examined when delivered to ensure freedom...