Operating instructions

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Operating instructions METTLER TOLEDO AT balances
Weighing samples or containers that
absorb or evolve moisture readily
All weighing samples or containers
made of wood, cardboard, paper,
cork (e.g. holder for round-bottomed
flasks), plastic or rubber can absorb
or evolve enough moisture to make the
display unstable and cause display of
nonreproducible or wrong weighing
results.
- If at all possible, containers made of
such material should be replaced by
metal or glass vessels. If this is not
possible, operations should at least
be performed in a room with a
constant atmospheric humidity.
The weighing sample or the contai-
ner touches the draft cover
- In such a case remove draft cover
16.
The weighing pan is placed at an
angle and touches the draft cover or
the base
- Turn the pan to the center position
(see Section 6.3).
Contamination
Powder, liquid or other residues at the
edge of the weighing pan or between
the weighing pan and the draft cover
can lead to unstable displays if the
weighing pan no longer has completely
unrestricted movement.
- Clean the weighing pan and the
draft cover (se Section 6.3).