Specifications
  23G-Series RO System 
3024270 Rev G  3  14Oct13 
1.3.4  DO NOT OPERATE IN A FLAMMABLE ATMOSPHERE: 
To  avoid  fire  or  explosion,  do  not  operate  this  device  in  an 
explosive environment or near flammable anesthetics. 
1.3.5  Device Labeling 
Do not, under any circumstances, remove any Caution, Warning, or 
other descriptive labels from the devices until the conditions 
warranting the label are eliminated. 
Operating definitions are provided to help you further understand 
your machine: 
Permeate Rate [Product Water Rate (Qp)] 
Permeate rate is the flow rate of purified water which has passed 
through the membrane and out of the membrane element; 
expressed in gal/min (gpm) or gal/hr (gph) [in metric, liter/min (Lpm) 
or cubic meters/hour (m3/h)]. Specified permeate rates are 
normally at 77F (25C). 
Concentrate Rate [Waste Water Rate (Qc)] 
Concentrate rate is the flow rate of water containing rejected solids 
to drain in gpm or gph (Lpm or m3/h). 
Feed Rate (Qf) 
Feed rate is the flow rate of incoming water in gpm or gph (Lpm or 
m3/h). Feedwater rate equals permeate rate plus concentrate rate. 
Recovery 
Recovery is the percentage (%) of feedwater converted to 
permeate. For example, 75% recovery means that out of a given 
feed rate, 75% is produced as pure water (permeate). 
Concentration 
Concentration equals the Total Dissolved Solids (TDS) of any 
stream (feedwater, concentrate or permeate) of a solution 
expressed as milligrams per liter (mg/L) or conductivity 
(microSiemens/cm). 
C
f
  =  Feed Concentration 
C
p
   =  Permeate Concentration 
C
c
   =  Concentrate Concentration 
C
avg 
=  Average Concentration in Machine 










