[tony braid]

Hi Guys
I am using 4000 litres a week through my membrane from new how long would it take before this starts to read
Regards Tony

[Avo]

Don't understand your question Tony mate  explain more

[tony braid]

Hi Avo thanks for your reply mate  what I am trying to say is I put a brand new membrane together reading nothing
Now after 8 months using 4000 litres a week it is now reading 18 is this the norm ?
Look forward to your reply

[Don Kee]

Is it reading 8 after your D.I (resin) or actually after the membrane?(before D.I)

[Avo]

What's your tap reading because this will go up and down at different times of the year which will send your rejection rate up  mate..

[tony braid]

 Hi Don it is reading 18 after membrane before it goes through DI
Avo my tap reading is 98 at the moment
Thanks guys for your reply
Regards Tony

[Avo]

You shouldn't be getting over 10 tds really with a tap read out like this..
2 or 4 is more like it..

What size membrane 4040??

[Don Kee]

It does seem like its risen too quickly mate, usually you should get 95% off the solids taken out (so around 4ppm)


What type of membranes are you using (40/40 or 150gpd) and do you flush regularly?
Also, what pressure do you have running through the R.O?


(Edit - avo beat me to it!)