CAS no.
†
Operating
temperature
Comments
Time/cycle
restrictions
Concen-
tration
*
Chemical
64-17-5
2°C to 30°C
Storage
12 months
and max. 0.5
bar
20%
Ethanol
64-17-5
2°C to 30°C
CIP
3 h
70%
Ethanol
64-17-5/
64-19-7
2°C to 30°C
CIP
3 h
20%/ 10%
Ethanol/
acetic acid
50-01-1
2°C to 30°C
CIP
5 h
6 M
Guanidinium
hydrochloride
7647-01-0
2°C to 30°C
CIP
1 h
0.1 M
(pH = 1)
‡
Hydrochloric
acid
67-63-0
2°C to 30°C
CIP
1 h
30%
Isopropanol
7664-38-2
2°C to 30°C
For passivation of
stainless steel
bed supports
8 h
5%
Phosphoric
acid
7647-14-5
2°C to 30°C
Purification, CIP
3 h
0 to 3 M
§,¶
Sodium
chloride
1310-73-2
2°C to 30°C
CIP
24 h, room
temp. to 30°C
1 M
(pH = 14)
Sodium
hydroxide
1310-73-2
2°C to 30°C
Storage
12 months
0.01 M
(pH = 12)
**
Sodium
hydroxide
1310-73-
2/
64-17-5
2°C to 30°C
CIP
3 h
1 M/ 20%
Sodium
hydroxide/
ethanol
7757-82-6
2°C to 30°C
Adsorption
3 h
1 M
§
Sodium
sulphate
57-13-6
2°C to 30°C
Purification, CIP
5 h
8 M
§
Urea
2°C to 30°C
Equilibration, ad-
sorption, elution
24 h
10 to 250
mM,
pH 2 to 10
Commonly
used aqueous
buffers for
chromato-
graphic use
LPLC and MPLC Columns Operating Instructions 28-9638-66 AC
97
8 Reference information