Zl
storage time we recommend the following:
- Store the inslruments in bright and dry roo�ns.
Roome of air humidities below
65 �
ere Alost favourable
which can be obtained by using air dehumidifying pl•nts.
The instruments should be aired periodically by inatalling
ventilators near them.
- Components, small instruments and accessories as eye
pieces end objectives that ere especially susceptible
to fungus should be stored in drying cabinets.
For example, confined and glazed cabinets of noncombus
tible material, in which heating sources (as incandescent
lamps or infrared radiators) produce en over temperature
of about
5 K,
are suitable as depository. Components, small
instruments and accessories can also be stored in
exsiccators.
- Steel parts that are bright, burnished or phoephatized
due to functional reasons ere to be protected by acidleas
greases (vaseline) and oils. It is advisable to renew
the protection against corrosion at intervals of three
months, using greases and oils for this purpose.
Precision mechanical and optical instruments will be
exposed to fungus growth under the following conditions:
- relative air humidity above
75 �
for more than three
days on end, darkness,
air motion
- dust end finger prints
optical surfaces
- longer storage times in wooden or leather containers.
(The growth of fungus is accelerated at temperatures
between
+15
°C end
+35
°C).
