PARTICLE SIZE DISTRIBUTION AT 110,000 FT
137
Fig. 2—Radioautograph of aluminum-foil liner. nighabr
to earth + parachute. Upon recovery the precipitator was again capped
at both*énds with polyethylene bags and then returned to the launch
site, where the precipitator was dismantled ana the sections containing
the liner, along with thé electron--microscope grids, were removed and
sent toHASL.
Although the procedures described minimized contamination of the
samples with nonstratospheric particles, the absence of extraneous
material on
certainty.
the
electron~microscope
grids
cannot be taken asa