22
Safety
Note:
Even small quantities of other substances, such as addi-
tives, modifiers, or salts can influence the durability of
the materials. The list of selected solvents was com-
piled based on research in the pertinent literature and
is only a recommendation by the manufacturer. If
there is any doubt, contact the technical customer ser-
vice department of the manufacturer.
Unsuitable
Solvents
The following solvents can attack the components of the device
and are therefore not suitable:
Mineral and organic acids (except in buffer solutions)
Bases (except in buffer solutions)
Liquids containing particles
Only suitable to
a limited extent
The following solvents are suitable to only a limited extend for
use in valves:
Methylene chloride
Tetrahydrofuran (THF)
Dimethyl sulfoxide (DMSO)
Slightly volatile solvents
Fluorinated hydrocarbons
Solvent tray
To avoid damage from leaks, always place solvent bottles in
a solvent tray on the device.
Self-ignition point
Only use solvents that have a self-ignition point higher than
150 °C under normal ambient conditions!
Toxicity
Organic solvents are toxic above a certain concentration. Ensure
that work areas are always well-ventilated! Wear protective
gloves and safety glasses when working on the device!
PEEK connections
Disposable PEEK fittings
One-piece disposable polyetheretherketone fittings
(PEEK) for easier mounting of flexible, thin capillaries
(outer diameter 0.5 mm)
Tightening torque of the PEEK screw:
Tightened by hand (approx. 0.5 Nm)
Protective measures
1. Only perform maintenance tasks described in this manual.
2. All other maintenance tasks are to be performed exclusively
by the manufacturer or a company authorized by the manu-
facturer.
Without exception, the following applies to all maintenance
tasks that can be performed by the user:
1. Switch off the device and pull the power plug!
2. Never open a device! High voltage poses a life-threatening
risk!
