The manufacturer informs: 

A domestic system for the production of practically pure and totally mineral-free water (conductivity and TDS are therefore zero) that is ideal for use in an aquarium, be it fresh or marine.  

The system consists of four successive stages:  

• 5 mcr sediment cartridge: removes suspended particles and rust or particulate residue from the water; recommended replacement every 6 months or 3000 litres of produced water; the transparency of the container gives the user the possibility to constantly monitor the cartridge's state of wear and tear

• cartuccia a carbone attivo pressato: elimina dall’ acqua cloro, metalli pesanti, residui di farmaci o pesticidi e altre sostanze potenzialmente dannose per l’ acquario; si consiglia di sostituire anch’ essa ogni 6 mesi o 3000 litri di acqua prodotta 
   
• Pentair's (made in the U.S.A.) TLC 50/75/100 series membranes were designed by the American company, a world leader in the field, for domestic drinking water treatment and have a permeate production, depending on the model, of 50, 75 or 100 GPD (equal to approximately 180, 275, 360 L/g) with a stabilised salt rejection rate of 98% under standard test conditions.
  
  

• activated carbon post-filter: cartridge made from premium quality activated coconut carbon to remove chlorine and chloramines, heavy metals, harmful contaminants and pesticides from the water, making the water clean, clear and free of harmful substances.

Flush Valve for membrane flushing: 

l’impianto è dotato di una valvola che consente di effettuare una regolare manutenzione della membrana consentendo di allungarne la vita media.

E’ sufficiente ruotare la manopola della valvola per far sì che l’acqua di scarto rientri all’ interno del vessel e fuoriesca da dove, normalmente, fuoriesce il permeato; in tal modo la membrana viene sottoposta al processo di lavaggio che ne migliora le condizioni operative.

Included in the package are: 

- spanners for the vessel (membrane container) and cups

- steel diverter for connection to the water mains with 1/2" female thread (tap connection)

- 5mt of white 3/4" hose

- instruction manual in Italian