Parameter
Unit
Single Pass
(65°C /
149°F)
Single Pass
(95°C /
203°F)
Recirculating
(65°C / 149°F)
Closed
System
(65°C /
149°F)
Closed
System
(95°C /
203°F)
5
Total Alkalinity
ppm
CaCO
3
No limits indicated. To be measured for calculating RSI.
6
Ryznar Stability
Index (RSI)
5.6 - 7.5
N.A.
5.6 - 7.5
5.6 - 7.5
5.6 - 7.5
7
Chlorine
ppm
< 0.5
—
< 0.5
—
—
8
Chlorides
ppm
< 500 (*)
< 100
< 500 (*)
< 500 (*)
< 100
9
Nitrates
ppm
No limits indicated. To be measured for calculating RSI.
10
Sulphates
ppm
< 1000
< 200
< 1000
< 400
< 200
11
Chemical
Corrosion Index
< 5
< 1
< 5
< 1
< 1
12
Iron
ppm
< 1
< 0.2
< 1
< 1
< 0.2
13
Manganese
ppm
< 0.2
< 0.05
< 0.2
< 0.2
< 0.05
14
Copper
ppm
< 1
< 0.2
< 1
< 1
< 0.2
15
Ammonium
ppm
< 0.5
< 0.5
< 0.5
< 0.5
< 0.5
16
Suspended
Solids (max
10µ)
ppm
< 10
< 1
< 10
< 10
< 1
17
Oil or Grease
ppm
< 1
< 1
< 1
< 1
< 1
18
Biology
CFU /
mL
< 10
5
< 10
3
< 10
5
< 10
3
< 10
3
Remarks on the technical specifications
Parameter
Remarks
1
pH
For stainless steel systems without other materials, pH can be
down to 6.
For closed loop systems, higher pH values are possible
2
Conductivity
Conductivity and TDS linked with conversion factor (theoretical
factor possible, but practical determination recommended at
least once)
6
Ryznar Stability Index (RSI) Recommended actions : see table for RSI
7
Chlorine
or shock treatment max. 2 ppm for 30 min/day
8
Chlorides
(*) Limit 200 ppm applicable when RSI < 5.6 or RSI > 7.5
10
Sulphates
Rejection < 2000 ppm. To be measured for calculating RSI.
11
Chemical Corrosion Index
Index = (Chl Sul Nitrates) / (M-Alkalinity) (all
expressed in meq/l)
15
Ammonium
limit not applicable for Cu-free systems
16
Suspended Solids (max
10µ)
No particles > 10µ allowed. (Particles <0.5µ not considered).
18
Biology
Anaerobic biology in closed system never allowed.
Instruction book
AIF999999
67
Summary of Contents for ZR 200
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