| http://www.w3.org/ns/prov#value | - The first weight should apply a load of 600 grams (in combination with the spacer), and the second weight, in combination with the first weight and the spacer disc, should apply a load of 1800 grams. [0128] Additional equipment required includes a vacuum trap for liquid that is suctioned out of the composite material at the end of the test, shallow dishes such as Petri dishes or plastic weighing b
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