|
|
| 19.
Leave the
cylinder
undisturbed
for 24 hours
(or until
the beginning
of the same
class period
the next
day).
|
|
|
| 20.
Take another
hydrometer
and temperature
reading
at 24
hours.
(Note: this
time period
is critical
and should
not be longer
than 24
hours).
Record the
results
on the Particle-Size
Distribution
Data Work
Sheet.
|
|
|
| 21.
Discard the
soil suspension
by pouring
it into a
special pail
and spill
the contents
outside in
a place for
discarding
soil materials.
Do
not pour the
suspension
down the sink!
|
|
| 22.
Carefully
rinse and
dry the hydrometer,
thermometer,
beakers, and
cylinders,
and repeat
the above
steps two
more times
for the same
horizon so
that you have
a total of
three sets
of results
for each sample.
|
|
| 23.
Repeat this
procedure
for each soil
sample from
every horizon.
|
|
|
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