New to RO/DI water use

[mark]

Originally Posted by rocco134

I am also new to RO/DI use. I just got my unit today. I have a quick question. Sorry to leach of your leach of your post salty.

Is the efficiency of the unit (waste: product) temperature sensitive (i.e higher water temp = less waste)? my unit is rated at 50gpd but i know that is based on ideal conditions (60psi and 77'F).

couple of links (here and here) that show the roll off in output with cold water and reduced pressure below the ratings as well as something on rejection rates.

[rocco134]

awesome! thanks Mark!!

there was mention of adding a piggyback membrane to improve your gpd. for future reference, do you know where i can pick one up?

also, if i were to change the membrane size to a 150gpd (i noticed from the links that were provided that some 150gpd membranes have a very good rejection rate) would i have to do anything special to the unit itself?