What is it?
The solvent recycler is a solvent conservation system
desgned to recycle uncontaminated solvents used in
isocratic HPLC systems. In most systems a high
proportion of the mobile phase can be recycled and
reused, which saves money by reducing solvent
consumption and the need for solvent disposal.
Reliably Accurate
The solvent recycler automatically detects eluting peaks
and diverts them to waste while sending clean,
uncontaminated solvent back to the reservoir for recycling.
Traditional recycling systems use a fixed voltage level (or
threshold above the baseline) which must be exceeded
before peaks can be detected. If the baseline changes,
new settings must be applied or contaminants may be
recycled instead of being sent to waste. Conversely, pure
solvent may be sent to waste instead of being recycled.
The solvent recycler incorporates a unique integration
algorithm to accurately detect peaks in the eluant to
ensure that contaminants are eliminated even if
chromatography system conditions cause the baseline to
drift up or down .
Solvents are therefore cleaner and can be used longer.
Sophisticated circuitry permits the signal to be zeroed
automatically via a contact closure, or manually by a
button on the front panel.
How does it work?
The signal from any HPLC detector is connected to the
solvent recycler, which monitors and continuously
displays the voltage level on a large, easily readable LED
panel located on the front of the instrument. The signal is
then connected directly to an integrator or data system.
Peak detection sensitivity may be adjusted by easy-to-set
thumb wheel switches which control familiar peak width
and peak threshold parameters, similar to those found on
most integrators and data systems.
When a peak is identified, an additional delay time may
be set to allow for volume between the detector and valve.
This further enhances the accuracy and purity of the
recycling. An LED indicator as well as a switchable
buzzer alert the operator that a peak has been found.
A reliable and inert electrically actuated solvent diverter
valve automatically switches mobile phase to waste when
peaks are detected. This valve may also be intentionally
|
