Substance Concentra-
t
ion by
volume
60–90 days
1
Sodium chloride 2 M Can be used under normal running condi-
t
ions. Do not use NaCl in storage solutions.
Please note that NaCl can cause corrosion
on stainless steel in acid solutions (pH below
4,5).
Sodium hydroxide 2 M OK
Trifluoroacetic
a
cid
0.1% Not recommended to be used with PA nets.
FEP changes characteristics. Thus, use
EPDM rubber.
Detergent 100% OK
Tween™/Tri-n-
b
utyl phosphate
1% / 0.3% OK
UREA 8 M OK
1
T
he test does not include PVC tubing.
Chemical resistance to sodium
c
hloride
BPG columns are equipped with wetted components of stainless steel and must there-
fore be appropriately maintained when exposed to NaCl during chromatographic
processes. If a process incorporates the use of NaCl solutions it is essential that the
column be thoroughly rinsed to remove any residual NaCl. It is recommended that a
water rinse of at least five column volumes be used. Water is the preferred rinse solu-
tion due to the solubility properties of NaCl in water verses other possible rinsing solu-
tions like ethanol solution.
The rinsing protocol should use at least five column volumes of purified water to assure
optimal removal of residual chloride ions, which can be corrosive to stainless steel over
time.
8 Reference information
8
.2 Chemical resistance
134
BPG Columns Operating Instructions 29193223 AB
To Next Page
Loading...
