[H h20]

HI, ive set my new merlin ro up and just need to add the di resin filter,ive got a 29.9ltr vessel(empty at the moment),once ive put my water through the merlin ro,
how long should the resin last using a 25ltr bag? i should be using (very loose guess)about 150 ltrs of water a day for the moment,hope to use a lot more as better jobs come in.

[Roy Harding]

I have a 20kg tank and go through 400ltr - 500ltr a day filled up resin 1st of jan and still have 0.0 tds.

Roy

[H h20]

I have a 20kg tank and go through 400ltr - 500ltr a day filled up resin 1st of jan and still have 0.0 tds.

Roy

Cheers roy,looks like the resin will last a while 

[Andrews_Water]

Hi Roy,

What's your tap water TDS, and what reading do you get from your Merlin ?

Andrew

[Roy Harding]

Andrew I Dont have a merlin I have a Pentair 4 x 40 R/O and tap tds 118

Roy

[Andrews_Water]

Roy,

That's why your resin life is so long.  Your system probably removes 98% of the 118 ppm in your tap water, and you're then feeding your resin with product water at only 2 or 3 ppm TDS.  If your tap water was, say 400ppm, and you were using a Merlin, you'ld be feeding water at 28 ppm to your resin, and it would only last one tenth as long.

Horses for courses !

Andrew

[Roy Harding]

Thanks Andrew.

Roy

[gaza]

what an advert for pentair

 gaza

[Andrews_Water]

Or for any RO system built round a low pressure 4" diameter x 40" long membrane.

Andrew

[UBA1]

My TDS is 378