The terms "water resistant"/"waterproof" are not concrete, so the environmental waterproofing rating of enclosed electronic equipment is codified formally by tests specified by the International Electrotechnical Commission (IEC) Standard 529:

  • IPX0 - Ordinary use; no water resistance tested
  • IPX1 - Protected against vertically falling water drops
  • IPX2 - Protected against vertically falling water drops when enclosure tilted up to 15 degrees
  • IPX3 - Protected against spraying water
  • IPX4 - Protected against splashing water
  • IPX5 - Protected against water jets
  • IPX6 - Protected against powerful water jets
  • IPX7 - Protected against temporary immersion in water
  • IPX8 - Suitable for continuous immersion

For all weather outdoor equipment, e.g. GPS or Surveying equipment, an IPX rating of 4 or better is essential.

Wa"ter*proof` (?), a.

Proof against penetration or permeation by water; impervious to water; as, a waterproof garment; a waterproof roof.


© Webster 1913.

Wa"ter*proof`, n.


A substance or preparation for rendering cloth, leather, etc., impervious to water.


Cloth made waterproof, or any article made of such cloth, or of other waterproof material, as rubber; esp., an outer garment made of such material.


© Webster 1913.

Wa"ter*proof` (?), v. t.

To render impervious to water, as cloth, leather, etc.


© Webster 1913.

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