, ▁service , ▁and ▁handling . ▁In ▁addition , ▁Life Proof ▁cases ▁meet ▁the ▁international ▁IP - 6 8 ▁standard ▁for ▁dust ▁and ▁water ▁protection . ▁The ▁case ▁is ▁required ▁to ▁with stand ▁an ▁eight - hour ▁sequence ▁of ▁circul ating ▁dust ▁particles , ▁and ▁one ▁hour ▁completely ▁sub mer ged ▁under ▁water ▁at ▁a ▁depth ▁of ▁. ▁Life Proof ▁recomm ends ▁that ▁the ▁end ▁user ▁test ▁a ▁new ▁case ▁for ▁water proof ness ▁before ▁installing ▁electronic ▁equipment . ▁ ▁References ▁▁ ▁Category : 2 0 0 9 ▁establish ments ▁in ▁the ▁United ▁States ▁Category : Comp an ies ▁based ▁in ▁San ▁Diego <0x0A> </s> ▁The ▁Australian ▁R anger ▁Federation ▁represents ▁Australian ▁park ▁r angers . ▁ ▁History ▁ ▁The ▁Australian ▁R anger ▁Association ▁( AR A ) ▁was ▁formed ▁in ▁Ad ela ide , ▁South ▁Australia ▁in ▁ 1 9 9 6 ▁to ▁provide ▁representation ▁and ▁a ▁national ▁approach ▁to ▁the ▁R angers ▁profession ▁within ▁Australia . ▁The ▁A RA ▁focused ▁on ▁setting ▁industry ▁national ▁standards ▁for ▁protected ▁areas ; ▁professional ▁networks ; ▁sharing ▁of ▁training , ▁end ors ement ▁of ▁specific ▁stand out ▁prov iders ; ▁social ▁networks ▁for ▁moral ▁boost ing ▁and ▁renew ed ▁energy . ▁ ▁Ind ividual ▁state / ter rit ory ▁r anger ▁bodies ▁generally ▁started ▁as ▁industrial ▁organis ations ▁but ▁slowly ▁over ▁time ▁and ▁through ▁eng agement ▁at ▁a ▁national ▁level ▁morph ed ▁to ▁more ▁professional ▁level . ▁The ▁growing ▁representation ▁in ▁each ▁state / ter rit ory ▁of ▁separate ▁industrial ▁organis ations ▁allowed ▁the ▁A