Porta Stream I delivers 6 minutes of uninterrupted, hands free flushing – without costly plumbing. Completely portable, the lightweight design’s gravity-fed flow begins immediately when the nozzle pull strap is removed. Porta Stream I is supplied with either 2.07L of Eyesaline concentrate which, when mixed with tap water provides 22.7L of eyesaline solution, or Fend-all Preservative, enough for 53-61L of water. This portable unit may be mounted on a wall, mobile cart or mobile stand.