6.5
7
7.5
8
8.5
500
550
600
650
700
750
800
850
900
12.5
10
7
5
3
2
1.1
0.2
500
550
600
650
700
750
800
850
900
RedOx - ORP mV
RedOx - ORP mV
pH
0.6
Variations in the RedOx (ORP) according to the pH and the chlorine rate
in water without a stabiliser at a temperature of 18°C.
The pH is good for skin and is effective due to the chlorine; the chlorine rate meets recommendations. The water is disinfected very well with a little chlorine.
The
pH
is
too low,
there
is
too
much
chlorine.
The
disinfection
is excessive
and
the
water will
irritate the skin of the bathers.
The pH is so high that it cancels out the disinfectant effect of the chlorine. Despite the excess dose of chlorine, the water is just disinfected, but by contrast, it is saturated.
pH:
8.5 +
Cl:
0.2 mg =
ORP:
500 mV
The pH is so high that it cancels out the disinfectant effect of the chlorine. With too little chlorine, the water is unsuitable for bathing.
The pH is very low which aids the disinfectant effect of the chlorine. However there is still not enough chlorine. Disinfection is good but the balance is delicate. The water will irritate the skin of the bathers.
pH:
6.5 +
Cl:
0.25 mg =
ORP:
745 mV
pH:
7.25 +
Cl:
2 mg =
ORP:
750 mV
pH:
6.5 +
Cl:
12.5 mg =
ORP:
900 mV
pH:
8.5 +
Cl:
12.5 mg =
ORP:
700 mV
mg free chlorine (DPD1)
25
