Reverse Osmosis + TDS Meter

Reply

  #1  
Old 03-05-16, 11:55 AM
WRDIY's Avatar
Member
Thread Starter
Join Date: Jul 2012
Posts: 678
Received 4 Votes on 3 Posts
Reverse Osmosis + TDS Meter

I bought a Premier Reverse Osmosis water filtration system from Costco about 20 months ago. I also bought a TDS Meter (http://www.amazon.com/HM-Digital-TDS.../dp/B002C0A7ZY) to measure the PPM of the water. Anything below 50 PPM is considered drinkable water and anything below 25 PPM is considered as crystal clear.


When I measured it 8 months ago, the R/O filtered water (produced by the system) is about 8-9 PPM. Bottle water is about 15-20 PPM and regular tap water (in our area) is about >310 PPM.


The instruction says to change out the filters every year. My wife and I use about 1-3 (or less on some days) gallons per day of the R/O filtered water. It has been 8 months and the R/O filtered water has risen from 9 PPM to 12-14 PPM.


Questions:
  • Is this normal?
  • Should we change the filters?
 

Last edited by WRDIY; 03-05-16 at 12:37 PM.
Sponsored Links
  #2  
Old 03-05-16, 12:49 PM
lawrosa's Avatar
Super Moderator
Join Date: Dec 2010
Location: Galivants Ferry SC USA
Posts: 18,142
Received 60 Votes on 52 Posts
The ppm count depends on what your incoming water tests at..

I change my filters yearly. Mine are cheap enough..

Your unit takes proprietary filters.. That I dont like..

Whats the exact model?

Plus the best membranes out there from my knowledge are the dow filmtec's.

The membranes are considered bad when your lower then a 90% rejection rate..

Reverse Osmosis Percent Rejection Calculator - Is your R.O. Membrane Bad

The right way to test that is direct from the membrane. Turn off the valve to the tank and run the water for 10 minutes, then test.
 
  #3  
Old 03-05-16, 12:57 PM
WRDIY's Avatar
Member
Thread Starter
Join Date: Jul 2012
Posts: 678
Received 4 Votes on 3 Posts
  #4  
Old 03-05-16, 01:30 PM
lawrosa's Avatar
Super Moderator
Join Date: Dec 2010
Location: Galivants Ferry SC USA
Posts: 18,142
Received 60 Votes on 52 Posts
they look both the same... The carts say to change every 6 months... I would change them..

You on city water?

If you want a better ro system get a 5 or 6 stage like I have... These use standard filters you can get anywhere.

I only use and install these


RO-90 Ultimate High Output 90 GPD Under The Sink Reverse Osmosis Drinking Water Filtration Systems | APEC Water

Best membrane out there IMO plus dual coconut shell carbon block filters.. These protect the membrane from chlorine if on city water...

Plus dow filmtec membranes...

Information center on Pure water technology by reverse osmosis - Leading manufacturer of reverse osmosis water filters
 
  #5  
Old 03-05-16, 02:06 PM
WRDIY's Avatar
Member
Thread Starter
Join Date: Jul 2012
Posts: 678
Received 4 Votes on 3 Posts
I will look into it Lawrosa. Thank you!
 
  #6  
Old 03-05-16, 09:19 PM
WRDIY's Avatar
Member
Thread Starter
Join Date: Jul 2012
Posts: 678
Received 4 Votes on 3 Posts
I just looked into it. Yeah, I wished that I had this information when I bought my entry level system a couple of years ago.

This one comes with a permeate pump with your system.
RO-PERM ULTIMATE Reverse Osmosis Drinking Water System with Permeate Pump, 90 GPD | APEC Water

I will keep this link in mind on my next purchase. How did you come about to find this system Lawrosa?
 
  #7  
Old 03-06-16, 06:39 AM
lawrosa's Avatar
Super Moderator
Join Date: Dec 2010
Location: Galivants Ferry SC USA
Posts: 18,142
Received 60 Votes on 52 Posts
How did you come about to find this system Lawrosa?
I'm on a well. I have low levels of alpha radiation in my water so I was told. These are usually wells with low PH..

When I moved into this home 15 years ago I wanted to get the best RO that I could find out there.

These units are truly a 1 year filter change. My membrane is still going strong and I am on about the 7th year with this system.

I added the UV light to mine also and a 14 gallon tank...

Its in a utility room. I ran the lines to the kitchen sink.. ( If I ever get the $$$ ill drill a deeper well...)


Name:  Picture 018.jpg
Views: 127
Size:  41.7 KB

Name:  Picture 017.jpg
Views: 125
Size:  45.8 KB
 
  #8  
Old 03-06-16, 06:46 AM
lawrosa's Avatar
Super Moderator
Join Date: Dec 2010
Location: Galivants Ferry SC USA
Posts: 18,142
Received 60 Votes on 52 Posts
I also have a large PH upflow system with calcite and a softner...

Read here... I'm on one of the largest aquafers...


http://www.nj.gov/dep/rpp/download/radwater.pdf
 
Reply
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description:
Your question will be posted in: