Operating Limitations - BRAND Dispensette III Mode D'emploi

Functions and Limitations of Use
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: Dispensette
Organic: up to 2.2 g/cm
up to 3.8 g/cm
Operating Exclusions
Dispensette III never use with:
®
– liquids attacking Al
and PTFE (e.g., dissolved sodium azide
– liquids attacking borosilicate glass (e.g.,
hydrofluoric acid)
– liquids which are decomposed catalytically
by platinum-iridium (e.g., H
– hydrochloric acid > 20 % and nitric acid > 30 %
– tetrahydrofuran
– trifluoroacetic acid
– explosive liquids (e.g., carbon disulfide)
– suspensions (e.g., of charcoal) as solid particles
may clog or damage the instrument
– liquids attacking PP (screw cap)
* Dissolved sodium azide permitted up to a
concentration of max. 0.1%.
34
/s
2
III / Dispensette
®
and Dispensette
3
3
O -ceramic, ETFE, FEP, PFA
2 3
*
)
O )
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 alkaline
solutions).
When dispensing inflammable media, make sure
to avoid the buildup of static charge, e.g., do not
dispense into plastic vessels; do not wipe instru-
ments with a dry cloth.
The Dispensette
tory applications and complies with the relevant
standards, e.g. DIN EN ISO 8655. Compatibility
®
of the instrument for a specific application (e.g.,
HF
®
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.
Dispensette
– liquids attacking Al
FEP, PFA and PTFE (e.g., dissolved sodium azide
– liquids attacking borosilicate glass (e.g.,
hydrofluoric acid)
– bases and saline solutions
– explosive liquids (e.g., carbon disulfide)
– suspensions (e.g., of charcoal) as solid particles
may clog or damage the instrument
– liquids attacking PP (screw cap)
Dispensette
– liquids attacking Al
and PTFE (e.g., dissolved sodium azide
– liquids which are decomposed catalytically by plati-
num-iridium (e.g., H
– bases and saline solutions
– explosive liquids (e.g., carbon disulfide)
– suspensions (e.g., of charcoal) as solid particles
may clog or damage the instrument
– liquids attacking PP (screw cap)
is designed for general labora-
®
Organic never use with:
®
O -ceramic, tantalum, ETFE,
2 3
HF never use with:
®
O -ceramic, ETFE, PFA, FEP
2 3
O )
2 2
*
)
*
)