BRAND Dispensette TA Mode D'emploi page 25

Limitations of Use
This instrument is designed for dispensing liquids,
observing the following physical limits:
– +15 °C to +40 °C (59 °F to 104 °F)
of instrument and reagent
– vapor pressure up to max. 600 mbar. Aspirate
slowly above 300 mbar, in order to prevent the
liquid from boiling.
– kinematic viscosity up to 500 mm
(dynamic viscosity [mPas] =
kinematic viscosity [mm²/s] x density [g/cm³])
– Density: up to 3.8 g/cm
Operating Exclusions
Dispensette TA never use with:
®
– liquids attacking Al O
2
like ETFE, FEP, PFA
and PTFE (e.g., dissolved sodium azide*)
– liquids which are decomposed catalytically
by platinum-iridium (e.g., H
Depending on the construction of the instrument.
– organic solvents
– trifluoroacetic acid
– explosive liquids (e.g., carbon disulfide)
– suspensions (e.g., of charcoal) as solid particles
may clog or damage the instrument
* Dissolved sodium azide permitted up to a
concentration of max. 0.1%.
Functions and Limitations of Use
/s
2
3
sapphire or fluoroplastics
3
O ) or tantalum.
2 2
Operating Limitations
Liquids, which form deposits may make the piston
difficult to move or may cause jamming
(e.g., crystallizing solutions or concentrated alka-
line solutions).
The Dispensette TA is designed for general labo-
®
ratory applications and complies with the relevant
standards, e.g. DIN EN ISO 8655. Compatibility
of the instrument for a specific application (e.g.,
trace material analysis, food sector etc.) must be
checked by the user. Approvals for specific applica-
tions in the medicinal / pharmaceutical / foodstuff
processing areas are not available.
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