Operation Manual D-480 ©BÜCH Labortechnik AG
8 - Maintaining the instrument 235
Drying tube filling (large)
The following picture shows the fillings of the drying tube:
Legend:
1 Empty space
2 Cotton (10 mm)
3 Sicapent® (314 mm)
Safety instruction
Strictly observe the safety instruction "Filling the drying tube" under Warning notes during operation
(on page 24).
Filling the drying tubes
Proceed as follows:
Disconnect both tubes.
Remove the glass tube.
Detach the screw-on caps.
Leave approx. 5mm space (1) at the end of the tube.
Plug approx. 10 mm of cotton (2) into the tube so that it comes to rest above the empty space
(3).
Fill in enough Sicapent® (3) to leave approx. 15mm space at the top of the tube. To do so, tap
the tube wall with a piece of wood or cork so as to prevent cavities. If the Sicapent® cannot be
tapped properly, also a glass rod for slight compacting can be used.
Clean any Sicapent® off the end of the tube.
Plug approx. 10 mm of cotton over the Sicapent®.
Replace the screw-on caps and tighten them on the glass tube by hand.
Push the glass tube between the clamps and close the tubes.
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