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2.4.1. Water test
Unit 2 - Fishing gear materials
2.4.1. Water test
This is the first step in the identification of a method. A small piece of netting yarn is put into a vessel filled with water after tying a simple overhand knot. Air bubbles in the material must be squeezed out by hand under water. Preferably a wetting agent (e.g. 1g 1 Lissapol N or Nekal BX) should be added to the water. The water test serves to classify the netting material in to two groups. i.e. those synthetic fibres which float in water (PE and PP) and those which sink (all other kinds of synthetic fibres)
This is the first step in the identification of a method. A small piece of netting yarn is put into a vessel filled with water after tying a simple overhand knot. Air bubbles in the material must be squeezed out by hand under water. Preferably a wetting agent (e.g. 1g 1 Lissapol N or Nekal BX) should be added to the water. The water test serves to classify the netting material in to two groups. i.e. those synthetic fibres which float in water (PE and PP) and those which sink (all other kinds of synthetic fibres)
Last modified: Wednesday, 21 March 2012, 5:19 AM