Pretreatment
The power of balance
Sirrix NE liquid
Getting back to the middle
Sirrix NE liquid
pH
14
13
12
11
10
9
8
7
6
5 Core neutralization
4 No blocking buffer
3 Phosphorus- and nitrogen-free
2 Biodegradable
1 Low COD / BOD
0
NaOH
3
Neutralization power
pH 12 pH 7 : 1.30 ml/l pH 7 pH 6.0 : 0.20 ml/l
pH 11 pH 7 : 0.60 ml/l pH 7 pH 5.5 : 0.35 ml/l
pH 10 pH 7 : 0.40 ml/l pH 7 pH 5.0 : 0.45 ml/l
pH 9 pH 7 : 0.20 ml/l pH 7 pH 4.5 : 0.70 ml/l
pH 8 pH 7 : 0.10 ml/l pH 7 pH 4.0 : 1.00 ml/l
4
Sirrix NE liquid For 1-liter solution 10 ml/l Sirrix NE liq.
pH
15
14
13
12
11
10
7
Sirrix NE liq.
6
0
0 50 100 150 ml
Volume NaOH 1N
5
Core neutralization
With acetic acid
Neutralized surface
NaOH
Acetate blocking buffer zone
With Sirrix NE liq.
Neutralized core
6
Neutralization applications
neutralizing subdivided box
washing boxes Sirrix NE liq. water
Sirrix NE liq. after:
pH meter
mercerization
scouring 4.0 – 4.5 pH
bleaching
alkaline treatments
20 – 60 °C
7
Neutralization applications
washing off
pad-batch
winch beck
Impregnation with open-width washer
Sandoflex A liquid cold batching
jigger
Sirrix NE liq. after
causticizing processes:
Sandoflex process pH meter
CRC process
alkaline process 6.0 – 7.0 pH
20 – 40 °C
8
Buffering applications
Sirrix NE with cellulases; pH
Bactosol CA liq. c. 6.0
5.5
optimal 5.0
Sirrix NE with alpha-amylases;
Bactosol PHC liq. hc 4.5
pH value with or without Sirrix NE liq.
pH of desizing
9.0
8.5
4.0
8.0
7.5
7.0
6.5 without
6.0
5.5
5.0 with Sirrix NE liq.
4.5
0 10 15 20 25 30 35 40 45 50 55 60 65 70
Time in min
9
Titration
Efficiency of the Sirrix NE liq.
proved by titration
The solution containing 10 ml/l Sirrix NE liq. is
titrated with NaOH 1N until pH 7.0.
99.3 ml NaOH 1N are neutralized with 10 ml
Sirrix NE liq. This neutralization strength allows
a perfect pH control in each situation.
pH meter
7.0 pH
25 °C
NaOH 1N
10 ml/l Sirrix NE liq. solution
pH
10
pH indicators
The pH meter can also be replaced with a
colored indicator. A whole range of such indicators
is available for different pH levels.
Table of pH indicators
Methyl Violet 6B Y B
Thymol Blue R Y Y B
Benzyl Orange R Y
Bromophenol Blue Y B
Methyl Orange R O
Methyl Red R Y
Litmus R B
Bromocresol Purple Y P
Bromotymol Blue Y B
Phenyl Red Y R
o-Cresol Red Y R
Phenolphthalein C R
Thymolphthalein C B
Alizarine Yellow R Y V
1,3,5-Trinitrobenzen C R
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14
B = Blue
C = Colorless
O = Orange
P = Purple
R = Red
V = Violet
Y = Yellow
11
