Instruction Manual
Iodide Electrode
16
standard used as ISA
use ISA
electrode exposed
check section entitled
to complexing agents
Complexation
air bubble on membrane
remove bubble by re-dipping
probe
"Incorrect Answer" incorrect scaling
plot millivolts on the linear axis.
(but calibration
of semi-log paper
On the log axis, be sure that
curve is good)
concentration numbers within
each
decade
are
increasing
with
increasing concentration.
incorrect sign
be sure to note sign of the
millivolt
number
correctly
incorrect standards
prepare fresh standards
wrong units used
apply correct conversion factor:
10
-3
M = 127.0 ppm as I
-1
complexing agents
check section entitled
in sample
Complexation