Maintenance and care multi N/C 2100S
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Platinum net
Platinum catalyst, approx. 4 cm
rolled-up HT mat,
approx. 2 cm high
For samples with high salt concentrations the catalyst
is filled on a
PLATINUM NET.
You can fixate the combustion tube on a trip
od for
filling. Fill the combustion tube in accordance with the
following instruction from the bottom up:
Position the platinum net in the combustion tube,
and carefully push it down with a glass rod.
Place the platinum catalyst for multi N/C carefully
onto the platinum net.
Roll up the HT mat from the narrow side. The roll
must have a diameter of about 13 mm and a
height of 2 cm, so it can easily slide into the
combustion tube.
Insert the rolled HT mat in the combustion tube
and slide the HT mat with a glass rod far enough
that the catalyst is covered. Press the mat only
slightly onto the catalyst.
The recommended work temperature for this filling is
750 °C.
7.5.4 Inserting the combustion tube
CAUTION
Alkaline salts (hand perspiration) cause crystallizations in the quartz glass when heating
the combustion furnace which reduce the service life of the combustion tube.
Where possible do not touch the cleaned combustions tube with your hands. Wear
protective gloves to install the lock on the combusti
on tube.
If necessary, clean the combustion tube externally before installing it in the combustion
furnace (e.g. by wiping it with moist cellulose).
Insert the combustion tube as follows:
Fit the furnace head to the combustion
tube:
Slide the union nut (1) onto the
combustion tube.
2. Place the pressure ring (2) into the
union nut.
The conical side of the pressure ring must
point up.
Filling the combustion
tube for samples with
high salt concentrations