2
•
Safety
Page 28
Diode Array/Multiple-Wavelength Detectors (VC-D11, VC-D12, VF-D11)
Operating Manual
2.4.2
Allowed pH Ranges
Allowed pH ranges (standard system configuration):
System
(Standard
Configuration)
Allowed
pH ranges
Remarks
Vanquish Core
1-13
•
pH values of 2 or less
: The application time should
be as short as possible. Flush the system
thoroughly after these applications.
•
pH values higher than 9.5 with optical detectors
:
Avoid using mobile phases with a pH value higher
than 9.5 together with optical detectors. This can
impair the functionality and optical performance
of the detector flow cell.
•
pH values higher than 12
: May affect
electrochemical detection. Before using highly
alkaline solvents for flushing the system,
disconnect the detector from the system.
•
Mobile phases containing ammonium hydroxide
: In
rare cases, a shortened lifetime of reversed-phase
(UHMW-PE) piston seals has been observed with
high pH, ammonium hydroxide containing mobile
phases and prolonged exposure.
Vanquish
Horizon
Vanquish Flex
2-12
2.4.3
Allowed Concentrations
Allowed concentrations (standard system configuration):
System
(Standard
Configuration)
Chloride
Buffer
Remarks
Vanquish Core
0.1 mol/L
or less
1 mol/L or
less
•
High chloride concentration
:
The application time should be
as short as possible. Flush the
system thoroughly after these
applications.
•
Mobile phases containing
ammonium hydroxide
: In rare
cases, a shortened lifetime of
reversed-phase (UHMW-PE)
piston seals has been observed
with high pH, ammonium
hydroxide containing mobile
phases and prolonged
exposure.
Vanquish Horizon
Vanquish Flex
1 mol/L or
less
-