Metrohm 711 Liquino - Manual (Page 141)

5. The 711 Liquino in synthesis laboratories
711 Liquino, Instructions for use 135
If 'intelligent' thermostats with a suitable interface and the necessary
functions are used it is possible to increase the degree of automa-
tion even further.
♦ Storage of the run sequences or dosing steps on the memory card
allows the same experimental procedure to be carried out repeated-
ly and reproducibly, if necessary with slightly altered parameters,
and without any further programming being required. Once a basic
sequence has been programmed it can be easily altered and
stored under a new name for use in further applications. Backup
and restore of the complete method memory on a memory card is
also possible.
Run sequences can be protocolled on a printer.
♦ Runs can be interrupted and restarted with the
<HOLD/CONTINUE> key.
♦ Complete control and programming with the help of a PC is possi-
ble via the RS232 interface with suitable software.
♦ Protocolling the temperature/dosing sequence as a temperature or
volume table or combined list is possible on a printer with a serial
connection. Special events during the run sequence, e.g. dosing in-
terruptions when a temperature limit is infringed, are also proto-
colled. A combined run curve (temperature/volume against time)
can be shown for each dosing step.
5.2 Please note …
If aggressive chemicals are used then care must be taken that the re-
sistance of the materials coming into contact with them is adequate.
• The dosing units for the Dosino 700 are available with glass or plastic
cylinders, see accessories on page 167ff. Wherever possible use dosing
units with a glass cylinder. However, these are
not suitable for:
− strong alkalis
− hydrofluoric acid HF
The plastic cylinders of the dosing units are made of ETFE (ethylenetet-
rafluoroethylene copolymer) and are not suitable for:
− oleum
− perchloroethylene
− tetrachloroethane
− tetrachloroethylene
ETFE cylinders have a limited resistance to:
diethylether, aminobenzene, aniline, bromine, bromomethane, dilute car-
boxylic acid, chloroethylene, chloroform, dichloromethane, diethylketone,
diisobutylketone, dimethylformamide, crude oil products, vinyl acetate,
ethylbenzene, fluorine, hydrazine hydrate, isovalerone, kerosine, methac-
rylate ester, methoxybutanone, methyl butyl ketone, methylene chloride,
methyl isobutyl ketone, methyl methacrylate, methyloxirane, methylpen-
tanone, oxolan, pentanone-3, perchloric acid, phenylamine, picric acid,
propylene oxide, pyridine, tetrahydrofuran, tetramethylene oxide, tri-