BUCHI DuMaster D-480 - Manual (Page 224)

Operation Manual D-480 ©BÜCH Labortechnik AG
8 - Maintaining the instrument 224
 Insert the wire mesh ronde.
 Fill the chemicals through the plastic tube into the post combustion tube:
 Fill in the corundum balls.
 Pour the copper oxide (CuO) and Pt catalyst into two separate beakers - simultaneously
pour from the two beakers, so that a good mixture is developed.
 Fill in the corundum balls.
 Insert the silver wool.
 Insert the plug at the top.
Notes regarding further operation
Please observe the following instruction:
 Operating temperature: 800 °C, max. 850 °C.
Filling the reduction tube
Note
Note the following rules:
 Observe the filling heights indicated as exactly as possible.
 The tube filling must not have any cavities. Therefore, tap the tube wall with a piece of wood or
cork when filling the tubes.
Safety instruction
Strictly observe the safety instruction "Filling reaction tubes" under Warning notes during operation
(on page 24).
Reduction tube filling
The following picture shows the fillings and filling heights of the reduction tube:
Legend:
1 Silver wool
2 Copper (20 mm)
3 CuO (50 mm)
4 10 x tungsten á 20 g
5 Corundum balls (55 mm)
6 Wire mesh ronde (22 mm)
7 Plug
Working temperature 815 °C