Table des Matières
Publicité
Les langues disponibles
Les langues disponibles
3.2
Mounting of Shaking Flasks and Containers
3.2.1 Preparing and Mounting of Shaking Flasks
•
This information refers to the standard shaking flasks
made of PTFE or of stainless steel.
3.2.1.1 Filling the shaking flasks
Fig. 2: Standard shaking flask
Upper fig.: PTFE-flasks with screw cap
Lower fig.: Stainless steel flaks
(1)
Cap of shaking flasks (screw cap for PTFE-flasks)
(2)
Washer (only with steel flasks)
(3)
Beaker for sample
Detailed information about the dimensions D
of the shaking flask are given in the supplement.
10
D
i
, H
and H
i
i
a
1.
Remove the cap of the shaking flask selected. Check the
washer, if applicable, it should not be damaged.
2.
Fill in the sample. Add grinding balls and process
materials, as required.
•
For selecting grinding balls please refer to section 1,
section 4, the application examples in section 5 or the
material data in the supplement.
- For wet milling add a suitable buffer, dilutant or
dispersing additive.
- You may add glass beads or silica sand, for instance.
Note that glass beads or silica sand are cannot be used
for trace element analysis. Due to their abrasiveness
and contents of various trace elements of varying
composition, rubbed-off material may interfere with
the assay.
•
Allow for the dead volume required.
- When using screw-cap PTFE containers, screw on the
screw-cap.
- When using steel containers, place the seal on the
bottom part and mount the cap.
- Assemble PTFE containers and their caps.
3.
Place the shaking flask into the holder and start the
operation.
3.2.1.2 Special Notes
•
When the sample is to be refrigerated prior to the
disintegration place the shaking flask with the sample
for a few seconds to minutes into liquid nitrogen, for
instance. Then mount it into the Mikro-Dismembrator S
and start operation.
Risk of injury! Deep-frozen flasks must not be handled
with bare hands. Use protective gloves and pliers.
Publicité
Chapitres
Table des Matières
