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REVERSE OSMOSIS INSTALLATION AND USER GUIDE
BARRIE
●
ONTARIO
●
CANADA 705.733.8900 WWW.EXCALIBURWATER.COM
Automatic Shut Off Valve Replacement
TECHNICAL DATA
Reverse Osmosis water quality is normally measured with a TDS meter. The more dissolved solids in the
water, the higher the conductivity. The results are usually reported in Parts per Million (ppm) or
Milligrams per Liter (mg/l) of Total Dissolved Solids (TDS). (Although technically they are not exactly
equal, in most discussions ppm = mg/l)
Reverse Osmosis Membranes are rated by the amount of dissolved solids that are rejected. This rating is
a ration of the TDS in the feed water to the TDS in the product water and is reported as Percent
Rejection. If the feed water contained 100 ppm of TDS and the product water contained 10 ppm of TDS,
90 ppm have been rejected and the reject ration is 90%.
Percent Rejection
=
Feed
TDS−Product
TDS
Feed
TDS
EXAMPLE: Feed water is 500 ppm TDS and the product water is 75 ppm TDS.
Percent Rejection = 500 – 75 x 100%
500
Percent Rejection = 0.85 x 100% or 85%
From 5-Micron
Carbon Block
To RO Membrane
Feed
RO Membrane
Permeate
Polisher (AICRO)
/ Tank Inlet Tee
Red Port