1.2.
EQUIPMENT
3
bench space for ovens and a small centrifuge. There should be floor space
for an evaporating (shadow-casting) unit, and for a refrigerator. It will
be difficult indeed to carry on all of these activities with less than 50 linear
feet of bench space. This means a room of about 200 sq ft. If office activities have to be incorporated, it must be decidedly larger.
The sizes of the rooms, other than office areas, are not particularly
dependent upon the number of people who work in them; although if
more disciplines are involved than just tissue work, preparatory techniques become more complex and varied, and consequently require more
room. It is better, then, to break up the activities into at least two rooms.
The requirements for office space, however, are quite dependent upon
the number of people who work in the laboratory. Not only will each
person need desk space, but there should be at least one large table where
prints can be sorted, trimmed and mounted. This should be equipped
with a large cutting board, and perhaps a dry mounting press. There
should be floor space for filing cabinets which will store prints and
negatives.
It will be apparent from the above that a "small" microscope laboratory
conservatively will have to occupy about 500 sq ft. This figure must be
substantially increased if there will be more than two or three active
investigators, or if it is expected to grow so that there will be more than
one microscope, or if investigators representing several disciplines, each
with its own technical problems, are to be represented.
1.2. Equipment
The equipment required to do tissue work with an electron microscope can be fairly exactly specified and its cost determined. Since there is
some latitude, items will be specified either as essential or desirable. In
preparing these lists items valued at less than $50 have not ordinarily
been included.
For section work of current standards the electron microscope used
must incorporate two features. There must be an externally adjustable
objective aperture, and there must be electrostatic compensation of the
objective polepiece (or the magnetic equivalent which can be controlled
by external means while the microscope is in operation). Although most
of the larger microscopes being made today incorporate these features,
certain simpified instruments of limited usefulness do not. The older
EQUIPMENT
3
bench space for ovens and a small centrifuge. There should be floor space
for an evaporating (shadow-casting) unit, and for a refrigerator. It will
be difficult indeed to carry on all of these activities with less than 50 linear
feet of bench space. This means a room of about 200 sq ft. If office activities have to be incorporated, it must be decidedly larger.
The sizes of the rooms, other than office areas, are not particularly
dependent upon the number of people who work in them; although if
more disciplines are involved than just tissue work, preparatory techniques become more complex and varied, and consequently require more
room. It is better, then, to break up the activities into at least two rooms.
The requirements for office space, however, are quite dependent upon
the number of people who work in the laboratory. Not only will each
person need desk space, but there should be at least one large table where
prints can be sorted, trimmed and mounted. This should be equipped
with a large cutting board, and perhaps a dry mounting press. There
should be floor space for filing cabinets which will store prints and
negatives.
It will be apparent from the above that a "small" microscope laboratory
conservatively will have to occupy about 500 sq ft. This figure must be
substantially increased if there will be more than two or three active
investigators, or if it is expected to grow so that there will be more than
one microscope, or if investigators representing several disciplines, each
with its own technical problems, are to be represented.
1.2. Equipment
The equipment required to do tissue work with an electron microscope can be fairly exactly specified and its cost determined. Since there is
some latitude, items will be specified either as essential or desirable. In
preparing these lists items valued at less than $50 have not ordinarily
been included.
For section work of current standards the electron microscope used
must incorporate two features. There must be an externally adjustable
objective aperture, and there must be electrostatic compensation of the
objective polepiece (or the magnetic equivalent which can be controlled
by external means while the microscope is in operation). Although most
of the larger microscopes being made today incorporate these features,
certain simpified instruments of limited usefulness do not. The older