Maintenance and care
multi EA 5000
170
}
Insert approx. 500 mg of quartz glass wool in the combustion tube. Carefully press
the glass wool down to a height of approx. 1 cm with a glass rod. Do not press it
down too tightly.
}
Carefully pour 16 g of platinum catalyst onto the quartz wool (fill height approx
4 cm).
}
Cover the catalyst completely with approx 250 mg of quartz glass wool. Carefully
tamp down the quartz wool.
}
Fill approx. 10 g of ground quartz glass into the combustion tube (fill height approx.
2 cm).
}
Cover the ground quartz glass with a piece of high temperature fiber mat (HT mat)
(layer height approx 1 cm).
}
Close the filled TOC combustion tube with septum and screw cap and reinstall it in
the furnace in reverse order.
}
Check the analysis system for leaks.
ü
The analysis system is ready for operation again.
1
2
3
4
5
Figure 81TOC combustion tube
1 HT mat
2 Quartz glass fragments
3 Quartz wool
4 Catalyst
5 Quartz wool
NOTICE
The catalyst may emit gas during first heating, this can be seen as mist formation in the
TIC reactor.
¡
Allow the catalyst to normalize during first heating for approx. 30 min until mist no
longer forms. Disconnect the gas path between the TIC reactor and the water traps
for this.
