7.4 Microcoulometer, capable of measuring the potential of
the sensing-reference electrode pair, and comparing this potential with a bias potential, and amplifying the difference to the
working electrode pair to generate a current. The microcoulometer output voltage signal should be proportional to the
generating current.
7.5 Automatic Boat Drive, having variable stops, such that
the sample boat may be driven into the furnace, and stopped at
various points as it enters the furnace.
7.6 Controller, with connections for the reference, working,
and sensor electrodes. The controller is used for setting of
operating parameters and integration of data.
7.7 Dehydration Tube, positioned at the end of the pyrolysis
tube so that effluent gases are bubbled through a sulfuric acid
solution, and water vapor is subsequently trapped, while all
other gases are allowed to flow into the titration cell.
7.8 Gas-Tight Sampling Syringe, having a 50 µl capacity,
capable of accurately delivering 10 to 40 µl of sample.
7.9 Quartz Boats.