Function; Limitations Of Use; Operating Limitations; Operating Exclusions - BRAND Dispensette S Mode D'emploi

2.2 Function

®
With the Dispensette S Trace Analysis bottle-top dispenser, liquids can be dispensed directly from the
supply bottle. The instruments are marked DE-M and optionally equipped with recirculation valve.
2.2.1 Operation
When the instrument is correctly used, the dispensed liquid comes into contact with only the follow-
ing chemically resistant materials:
Various fluoroplastics (e.g. ETFE, FEP, PFA, PCTFE, PTFE), Al
lum depending on the version (see label on the dispensing tube and the recirculation valve).

2.3 Limitations of Use

This instrument is designed for dispensing liquids, observing the following physical limits:
•
Operating temperature from +15 °C to +40 °C (from 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 liq-
uid from boiling
•
Kinematic viscosity up to 500 mm
3
density [g/cm ])
•
Density up to 3.8 g/cm

2.4 Operating Limitations

•
Liquids, which form deposits may make the
piston difficult to move or may cause jam-
ming (e.g., crystallizing solutions or concen-
trated alkaline solutions). If the piston
movement becomes sluggish or stiff, the in-
strument should be cleaned immediately
(Cleaning, p. 49).
•
When dispensing inflammable media, make
sure to avoid to buildup of static charge,
e.g., do not dispense into plastic vessels; do
not wipe instruments with a dry cloth.

2.5 Operating Exclusions

2.5.1 Dispensette® S Trace Analysis
®
Never use Dispensette
•
Liquids attacking Al
plastics such as ETFE, FEP, PFA PCTEF and
PTFE (e.g., dissolved sodium azide*)
9974 91
2
/s (dynamic viscosity [mPas] = kinematic viscosity [mm
3
S Trace Analysis for:
O -sapphire or flouro-
2 3
O -sapphire, platinum-iridium or tanta-
2 3
•
The instrument is designed for general lab-
oratory applications and complies with the
relevant standards, e.g. DIN EN ISO 8655.
Compatibility of the instrument for a spe-
cific application (e.g., trace material analy-
sis, food sector etc.) must be checked by the
user. Approvals for specific applications,
e.g. for production and administration of
food, pharmaceuticals or cosmetics are not
available.
•
organic solvents
•
Trifluoroacetic acid
•
Explosive liquids (e.g., carbon disulfide)
2 Safety Instructions
2
/s] x
35
Operating manual