Can you guys please help me pick out an RO/DI unit?! Please?

[K9coral]

Hope its not too late. PM sent.

 

[Anonymous]

I have the 75 GPD unit. Not sure what it will actuallt make once hooked up. I hope it can keep up since my system will have 170-190 gallons total.

 

[Anonymous]

I have a 60 GPD membrane. If it were able to run all day I can probably make 30-40 gallons a day.

 

[Anonymous]

why don't you recommend getting the 100gpd membranes?

jayo

 

[bleedingthought]

I have a 60 GPD membrane. If it were able to run all day I can probably make 30-40 gallons a day.

It can't run all day?

 

[Unresistible Blue]

why don't you recommend getting the 100gpd membranes?

jayo

A little background on this subject - it seems to come up often.

Manufacturers report the nominal production of their membranes under standard conditions. Filmtec membranes for instance, use the follwing standard conditions:
77 degrees F feed water
250 ppm feed water
50 psi

Other manufacturer use standard specs, however they more typically use 60 psi.

Under these conditions, 100 gpd Filmtec membranes revoce 90% of the tds in the feed water. Filmtec membranes 75 gpd and less remove 98% of the tds in the feed water.