Aqualine
16
Preparations
15.03.18/ YACE0086
6.3 Heat transfer liquids
LAUDA
designation
Working
temperature
range
Chemical
designation
Viscosity
(kin)
Viscosity
(kin) at
temperature
Size
Catalogue number
from °C
to °C
mm²/s
at 20°C
mm²/s
5 L
10 L
20 L
Aqua 90
5...90
decalcified
water with
water stabi-
liser
1
--
LZB 120 LZB 220 LZB 320
IMPORTANT
There are different sorts of water!
Tap water may be unsuitable for operation due to the calcium carbonate content
risk of
calcification of the stainless steel tank.
High purity water (from ion exchangers) and distilled or bidistilled water are unsuitable for
operation due to the corrosive properties of these media.
High purity water and distil-
lates are suitable as a medium after the addition of 0.1 g of soda (Na
2
CO
3
, sodium car-
bonate) / liter of water.
TIP: Water baths can be operated ideally with LAUDA Aqua 90, available in container
sizes of 5, 10 or 20 liters (order number LZB 120, LZB 220 or LZB 320).
There is a risk of electrochemical oxidation with the use of racks of non-ferrous metals or
non-ferrous metal samples.
The LAUDA Aqualine water bath tanks are produced in stainless steel 1.4301 and are
accordingly resistant to mechanical and chemical stresses.
Due to the different electrochemical potentials of metals electrochemical oxidation may
occur in the case of direct contact between the tank and a rack (e.g. copper) and the bath
may corrode despite the use of the highest quality materials for the tank.
TIP: Avoid the use of this type of rack or the direct contact with this sort of rack or contact
with non-ferrous metal samples and the inside of the container. Use original LAUDA
stainless steel racks and commercially available racks in temperature-resistant plastics.
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