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Old 12-22-2013, 09:01 PM   #1
dickproenneke
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Default Should I send my RO to Ward Labs?

I recently installed a BRS RO system in my brewery (ok, it's my basement bathroom). The 4-stage unit performs beautifully - 276TDS in / 004TDS out. Assuming I use 100% RO to brew, is it still necessary to test my water even though TDS is so low?

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Old 12-22-2013, 09:27 PM   #2
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If your RO system is working properly the remaining salts should be on the order of just a few ppm each. I wouldn't think it necessary to test unless you are unsure of the filter's effectiveness or you just want to establish a baseline for building your water.

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Old 12-23-2013, 12:53 AM   #3
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Your TDS reading is your best assurance of how the system is performing. The RO profile given in Bru'n Water is a decent snapshot of what that water will be. A properly operating system will probably only deviate a few ppm from those values. Not enough to worry about.

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Old 12-23-2013, 02:26 AM   #4
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Thanks! I'll put off on the water test for the time being. Cheers!

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Old 12-23-2013, 03:59 AM   #5
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It would be interesting to see a comparison of a fresh install compared to 4 months of usage or just before filter changes. You could post your results here for the education of the members.

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Old 12-23-2013, 03:01 PM   #6
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Quote:
Originally Posted by iaefebs View Post
It would be interesting to see a comparison of a fresh install compared to 4 months of usage or just before filter changes. You could post your results here for the education of the members.
I can do that. The inline TDS meter will certainly make it a snap.

I have noticed that there are fluctuations in the numbers. The fight against TDS creep has been a constant battle. And last week we didn't get above freezing for a few days and my feed TDS dropped by 30 points.
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Old 12-23-2013, 03:41 PM   #7
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Keep in mind that the calibration of your TDS meter and the performance of your RO unit both are functions of temperature.

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