[clear-view]

I have just bought a wfp backpack system it came with a big blue cylinder which i think is resin, please tell me if im wrong. I was told just plug one end into tap with hose and the other end into the backpack, but when reading other posts i read about ro unit, is this something that i need to get going, if yes how much are they normally and where in my system do i put it.  i am based in Glasgow incase that makes any difference. Can anyone tell me how many litres of water a large cylinder of resin should do. thanks

[mark dew]

You can get a ro unit from here.
http://www.ro-man.com/shop/index.php/cPath/22?osCsid=9a697ef3a2e3ac5714f86ce59c3a54c3

The unit won't go (or you don't want to have it) with your system.
The ro is better going in a shed at home in between a tap and a water container.
You then transfer the water to your van tank or into barrels.

I don't know what the tds reading of water is where you are so cannot answer how long your resin will last.
If you have a tds meter you can work it out with this calculation:

The formula came from www.andwat.co.uk/ a while ago. To see how long a 25 litre of resin will last divide 500,000 by your TDS reading, this will then give you the amount of water per 25 litre sack of resin.

Example with a tds of 200:

500000/200=2500 litres per 25 litre bag.

[clear-view]

what difference does having an ro make

[EZclean]

you dont need an RO in glasgow, TDS is less than 30ppm anyway. but dip the TDS meter in and find out.
scrimman takes a small DI vessel out with him and fills up the backpack at customers taps.

[matt]

you dont need an RO in glasgow, TDS is less than 30ppm anyway. but dip the TDS meter in and find out.
scrimman takes a small DI vessel out with him and fills up the backpack at customers taps.

less than 30  ive used that on windows in the past 

[windymiller]

My tap tds is 60, with 300gpd ro off ebay for £114 down to 0ppm now. Just practising on own windows now to eliminate white spots. lol

[mci services]

if your in glasgow dont bother with ro mate honestly. just do as instructed and use the di vessel

[mark dew]

if your in glasgow dont bother with ro mate honestly. just do as instructed and use the di vessel

30 ppm? 
Stu-mac, how much resin do you get through per year?

[mci services]

two bags a year ie 25 kg per 6 months