Weiss GWE safety workbenches for laboratories

Weiss GWE safety workbenches
for laboratories

2
Weiss GWE
Effectively against contamination
Weiss GWE HFC-SH 900
Weiss GWE safety workbench. Increased application
in the chemical-pharmaceutical industry
Nowadays, a sensible approach to
dealing with active and unknown
substances in laboratories within
the chemical-pharmaceutical in-
dustry calls for safe workstations,
in particular with regard to weighing
work.
This is guaranteed particularly by
the workbench HFC-SH 900.
In the HFC-S safety workbench,
personnel and the surrounding
environment are protected effectively
against contamination by the
systematic use of filters and an
optimized air flow.
The bright and transparent working
area and ergonomic design provide
a comfortable working environment.
Application
• Work with active and toxic
powdered substances (active
ingredients)
• Weighing work (micro and
semi-micro balances according
to USP requirements)
• Sampling
• Product transfer
• Transfer works

Perfect Protection for person, product and environment
Maximum safety
• Protection from airborne
particles and aerosols by the
inward air flow
• Optimized air flow design
ensures the highest possible
level of safety and Robustness
• Increased safety due to two
consecutive filters (HEPA H14)
In order to ensure the protection
of the user over several hours of
operation, the increasing pressure
drop across the filters is adjusted
automatically
The innovative bag-out filter system
facilitates low-contamination replace-
ment of the pre-filter.
Main filter can be qualified
• The main filter can be qualified
in situ by means of DEHS filter
scanning contaminated air is fed
exclusively through the particle
filter
• The positive pressure plenum
ensures that the pre-filter is
dynamically sealed and the
contaminated air is fed exclu-
sively through the particle filter
• The innovative bag-out filter
change is carried out with low
contamination risk within the
work chamber during operation
Maximum quietness -
only 52 dB(A)
Optimal air flow and sound-ab-
sorbing measures have enabled
us to reduce the noise level to a
minimum.
HEPA H14 filter
Operating Mode
Exhaust air
• In this containment, the air flows
inwards through the filter.
• The air flow is guided towards
the interior in order to prevent
released particles and aerosols
from leaving the controlled
working area.
• The two consecutive HEPA H14
filters retain the particles effectively.
• The optimized air flow design
ensures the highest possible level
of safety and robustness.
Airflow and filtering in the HFC-SH 900
Illumination
Tested and certified
Intake air
Tested personal protection in
accordance with EN 14175-3 for
laboratory fume cupboards. Escape
of < 10 ìg/m 3 breathing air measured
in an onsite test.
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Weiss GWE
Equipments and options for your safety workbenches
The workbench can be adapted to
meet your additional requirements:
Active carbon cassette with pre-filter
Anti-glare lighting for good visibility
Underframe for maximum legroom and
stability
*only in combination with underframe
Waste disposal system for safe handling of
waste and samples
Ionization unit for electrostatic discharge of
powders and equipment, placed underneath
the arm support and effective across the
whole work surface
Robust work surface made of glazed technical
ceramic and is chemically resistant, highly
scratch-resistant, shock-proof and easy to
clean
• Exhaust air connection connection:
to the building exhaust air
system
• Cable pass-through sealable side
openings for supply and data
lines
• Spillage protection from lipped
edges
• Excellent visibility from an er-
gonomic seating position thanks
to sloping front cover
• Hinged front cover for easier
insertion of larger objects
• Solvent sensor to detect satura-
tion of active carbon

Perfect Protection for person, product and environment
Precise weighing and protection of the operator
Weiss GWE HFC-SH 1200 MT
The HFC-SH 1200 MT combines
precise weighing technology and
protection of the operator while
handling active and toxic sub-
stances. In addition to the features
of the HFC-S series, the MT version
offers the following advantages for
high resolution scales:
Low vibration
The scale table and working area
are completely decoupled by a
table-in-table solution. This prevents
the transfer of vibrations and
facilitates work with high-resolution
scales as per USP requirements.
Free work surface
In order to conceal the cabling,
it is fed out underneath the scale
through the centre of the table.
Supply and data lines can be fed
out through the sides via additional
openings.
Example of a minimum weight according
to USP
Minimum weights
The determination of minimum
weights according to USP must be
carried out onsite with the actual
measurement setup and forms a
part of the performance qualifi-
cation (PQ) process.
For this safety workbench generic
minimum weights are determined
which can be used as empirical
values in the design qualification
process.
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Weiss GWE
Weiss GWE HFC-S 1300
with increased interior
Comparison HFC-SH 900 with HFC-S 1300. On the right: The safety workbench
with larger interior is perfect for greater space requirement.
A larger interior ensures even
safer working conditions at the
HFC-S 1300.
• All features of the HFC-S series
have been implemented in the
1300 version, together with a
considerably larger interior.
• The working height of the interior
has been increased from 500 mm
to approx. 900 mm. Devices with
a total height of approx. 830 mm
can easily be inserted through the
enlarged front opening.
• Typical usage includes decanting,
sampling, weighing large quan-
tities of substances and working
with a sifting machine.
• Regulation and control system
SKANCONTROL SKC4. Control of
the different functions of the
safety workbenches. Simple operation
with indicators and pushbuttons.

Perfect Protection for person, product and environment
Weiss GWE HFC-SH 1200 Patho
Safety in pathology laboratories
This safety workbench protects you
reliably in your work in pathology
and histology laboratories against
inhaling solvent vapours. The table
extraction prevents the release of
vapours, e.g. formaldehyde or
toluene
• Solvents, and especially formaldehyde
vapours, are effectively
removed from the exhaust air via
an active carbon filter
• Convenient cleaning of working
area, which is made of stainless
steel and glass
• The open construction ensures
ergonomic working conditions in
a well-lit working area
Air flow through a HFC-SH 1200 Patho
Active carbon filter
HEPA H14 filter
Illumination
Lateral
pass-through
Operating Mode
• The air flow, which is directed downwards and towards the
rear (green arrows), guides the released solvent vapours
away from the user. This protective air flow is produced by
a lownoise ventilator.
• HEPA H14 filters are placed both in front of and behind the
ventilator in order to remove aerosols and particles from the
exhaust air.
• The solvent vapours that are removed from the air are
collected in the active carbon filter cassettes.
• The cassettes contain a special type of active carbon that
adsorbs all common solvents and has been prepared for use
with formaldehyde.
• The safety workbench has a pleasant noise level (approx.
52 d(B)A). The ventilator is adjusted automatically if filter
resistance increases (filter blockage).
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Technical data
Series HFC-SH 900 HFC-SH 1200 HFC-S 1300 HFC-SH 1200 Patho
Outer dimensions
(W × D × H)
(H with active carbon kit)*
(H with draught diverter)
Underframe
(W × D × H)
Inner dimensions working area
Weiss GWE GmbH
Wiechmannsalle 3
27798 Hude
Germany
Phone: +49 (0) 4484 /189-0
Fax: +49 (0) 4484 /189-189
contact@gwe.de
www.gwe.de
mm
mm
mm
mm
mm
(W × D × H) mm
Height of work opening
with: closed front cover
open front cover
Separation efficiency of
HEPA H14
Intake/exhaust air
volumetric flow rate
Stand-by mode
in operation
mm
mm
mm
%
µm
m 3 /h
m 3 /h
900 x 740 x 1075
H + 160
H + 110
850 x 710 x 760
Adjustability H: + 40/-10
835 x 545 x 600
270
470
99,995
0,3
160
280
1200 x 740 x 1075
H + 160
H + 110
1150 x 710 x 760
Adjustability H: + 40/-10
1135 x 545 x 600
270
470
99,995
0,3
1215 x 880 x 1460
H + 355
H + 110
1150 x 850 x 760
Adjustability H: + 40/-10
1136 x 655 x 900
1210 x 720 x 1236**
1210 x 940 x 1236***
inkl.
H + 110
1150 x 710 x 760
Adjustability H: + 40/-10
1130 x 440 x 570**
1130 x 660 x 570***
545
835 498
99,995
Weight incl. underframe kg 160 200 250 150
220
380
0,3
445
780
99,995
Electrical connection V/Hz 230/50 230/50 230/50 230/50
Power consumption approx. W 195 250 400 400
Light intensity Lux (lx) > 700 > 700 > 700 > 700
Noise level dB (A) 52 52 55 52
* Required free height above the outlet: > 90 mm, ** Type: HFC-SH 1200 Patho / 700, *** Typ: HFC-SH 1200 Patho / 900
All dimensions rounded to 5 mm. Subject to change due to technical developments.
0,3
280
400
Technische Änderungen vorbehalten.
Stand 09/2010/TCC/indd/CS4