15
Ductless
Fume
Hoods
3.3.2
Working
Ergonomics
On
most
occasions,
you
would
most
likely
be
operating
the
fume
hood
in
sitting
rather
than
standing
posture.
There
are
some
obvious
advantages
of
the
sitting
posture:
•
The
physiological
energy
cost
and
fatigue
involved
in
sitting
are
relatively
less
•
Sitting
posture
provides
the
body
with
a
stable
support
However,
sitting
position
has
some
drawbacks
too:
•
The
working
area
available
is
fairly
limited
•
There
is
a
potential
risk
of
being
constrained
in
the
same
posture
for
a
long
time
•
Sitting
posture
is
one
of
the
most
stressful
postures
for
one’s
back
Therefore
you
should
pay
careful
attention
to
the
following
guidelines
in
order
to
achieve
comfortable
and
healthy
working
conditions:
1.
Always
ensure
that
your
legs
have
enough
legroom.
2.
Keep
your
lower
back
comfortably
supported
by
your
chair.
Adjust
the
chair
or
use
a
pillow
behind
your
back
whenever
necessary.
3.
You
should
place
your
feet
flat
on
the
floor
or
on
a
footrest.
Don’t
dangle
your
feet
and
compress
your
thighs.
4.
You
should
keep
varying
your
sitting
position
throughout
the
day
at
regular
intervals
so
that
you
are
never
in
the
same
posture
for
too
long.
5.
Observe
the
following
precautions
with
respect
to
your
eyes:
•
Give
your
eyes
frequent
breaks.
Periodically
look
away
from
the
work
area
and
focus
at
a
distant
point.
•
Keep
your
glasses
clean.
6.
Arrange
the
items/apparatus
frequently
used
in
your
work
in
such
a
way
that
you
can
minimize
the
physical
strain
involved
in
handling
them.
7.
Exercise
regularly
Ergonomics
accessories
available
with
Esco
include:
a.
Armrest
padding
b.
Lab
chair
c.
Footrest
Please
contact
your
local
distributor
or
Esco
for
more
information.
Summary of Contents for Ascent max
Page 6: ...iv...
Page 10: ...viii...
Page 22: ...12...
Page 26: ...16...
Page 60: ...50...
Page 61: ...51 Ductless Fume Hoods APPENDIX...
Page 70: ......