At the
heart
of

evaporation
Choose the right vacuum pump
for your process
A must for
high-boiling-point
solvents:
Diaphragm pump
MD 1C
Chemistry diaphragm pump
delivering 2 mbar
Solvents with elevated boiling points have become very
Fig. 6. Molecular collision on particles can be tracked and common with rotary evaporators and drying chambers. Such
converted to size using NanoSight technology.
solvents require a vacuum pump capable of delivering a low
ultimate vacuum combined with excellent chemical resistance.
high-resolution analysis of particle size distributions can
VACUUBRAND three-stage Chemistry Diaphragm Pumps generate
an oil-free vacuum of 2 mbar. Parts in contact with gases are
be determined (Fig. 6).
made of chemically resistant fluoro plastics like PTFE and ETFE,
Both the CPS and the NanoSight technologies can best for aggressive media to be evacuated or transferred.
measure down to about five nanometres and are
expected to play a major part in filter analysis in the
Why automatic vacuum control?
next few years, especially in the pharmaceutical industry
where the performance of filters can be a matter of life
Boiling-over:
or death.
Spoilt sample, loss of
time and money
Key to success
The better way:
Whatever the pore size though, a key factor to ensure
Automatic vacuum
control!
good interlaboratory comparisons of all the techniques is
the availability of reference standard pore sizes.
The mission of The Filtration Society to ‘advance
knowledge in the design and use of filtration’ was
certainly brought sharply into focus at the recent seminar
For ease of operation, best results and
environmental protection, the pump is
on testing and, who knows, may even save a few lives in
available as a leading-edge chemistry
the future. u pumping unit with rpm control and
real automatic vacuum control.
Dr Graham Rideal is Science Correspondent of the Filtration
Society and Managing Director of Whitehouse Scientific,
Waverton, Chester, England. www.whitehousescientific.com.
The Filtration Society is a not for profit organisation founded
over 40 years ago to advance knowledge in the design and
Chemistry pumping unit
PC 3001 VARIO with
use of filtration and separation processes. With extensive
automatic vacuum control:
membership in over 30 countries it is recognised internationally
adding the “brains”
to the “heart” of the process
as the premiere resource in its field. The journal Filtration
and quarterly technical seminars ensure that the most up to
date scientific and technical developments are brought to the
e.com/elab
attention of potential users.
Re f e R e n c e s :
.scientistliv
1
www.porometer.com;
2
www.tecan.co.uk;
www
3
www.WhitehouseScientific.com;

at
✔
4
www.cpsinstruments.eu;
5
www.NanoSight.com;
or
VACUUBRAND GMBH + CO KG
6
www.BS-Partikel.de
Alfred-Zippe-Str. 4 · 97877 Wertheim · Germany
39
Tel.: +49 9342 808-340 · Fax: +49 9342 808-450
cle
info@vacuubrand.de · www.vacuubrand.com Cir
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