Allowed chemicals for wetted
surfaces
Chemical
Concentration
Max time / cycle
Max acc.
expos.
Usage
Acetic acid
25%
3 h
3000 h
CIP
Citric acid
pH 2 to 2.5
1 h at temp ≤ 60°C
1000 h
CIP
Ethanol
20%
12 months
Unlimited
Storage
Ethanol / Acetic
acid
20%/10%
3 h
3000 h
CIP
Guanidine hydro-
chloride
6 M
5 h
5000 h
CIP
Phosphoric acid
5%
Overnight
Unlimited
For SS passi-
vation
2-propanol
30%
1 h
1000 h
CIP
Sodium chloride
0 to 3 M
3 h
3000 h
Purification,
CIP
Sodium
hydroxide
1 M at pH 14
0.5 M
0.1 M at pH 13
24 h at temp ≤ 40°C
3 h at temp ≤ 50°C
12 months
1000 days
3000 h
Unlimited
CIP
CIP
Storage
Sodium hypo-
chlorite
300 ppm
3 h at temp ≤ 50°C
3000 h
CIP
Sodium
hydroxide/
ethanol
1 M NaOH and 20%
ethanol
3 h
3000 h
CIP
Urea
8 M
5 h
5000 h
Purification,
CIP
Cleaning solu-
tions
1% to 6% STERIS™
CIP 100™, 0.5%
Henkel P3™-11,
0.2% Micro, 0.2%
Terg-a-zyme™, 0.1%
Tween™ 80
3 h at temp ≤ 50°C
3000 h
CIP
11 Reference information
11.4 Chemical resistance
ÄKTA flux s Operating Instructions 29046893 AG
191
