Example 2
7
The following examples are used to
show two very different cleaning pro-
grammes:
Example 1:
Water testing laboratory
Analysis: inorganic materials
Laboratory equipment: Sample bottles
Programme: acidic pre-wash, alkaline
cleaning, acidic neutralisation,
1–2 interim rinses, final rinse with fully
de-mineralised water, drying
Example 2:
Institute for cell culture
Laboratory equipment: for cell growth
Programme: pre-wash, alkaline
cleaning with oxidation agent, tenside
and phosphate free, citric acid based
neutralising agent, 2 interim rinses, final
rinse with purified water, drying
Example 1
Laboratory glassware
Most laboratory equipment is made
from borosilicate glass. Unlike other
types of glass (except: quartz glass)
borosilcate glass has very good physi-
cal properties and is highly resistant to
chemicals. Fluxing acids and strong
suds will still etch into the surface of
glassware if the concentration, tem-
perature and effective periods are
increased.
Because of this alkaline cleaning
agents are generally used. If at all pos-
sible longer holding periods should be
avoided at temperatures significantly
higher than 70°C, and mildly alkaline
cleaning agents should be used to re-
duce glassware corrosion to a mini-
mum.
The deterioration rate of glassware
must be taken into account according
to its application. For instance etching
on a simple beaker is not a major pro-
blem. However, could lead to inaccura-
te results with volumatic equipment
such as pipettes.
Conclusion
It is essential for laboratories to be pro-
vided with customised solutions for
their specific needs. And this requires
a good working relationship between
the user and the manufacturer of the
washer disinfector!
Miele’s team of application specialists
have expert knowledge of the different
machines and mobile units, baskets
and inserts required for different uses.
And our team of highly trained techni-
cians will supervise the installation,
commissioning and programming of
the machine as well as train personnel
in its use. Should there be technical
difficulties at any time we have our own
team of fully trained service techni-
cians.
For a professional solution to your
cleaning requirements you can be as-
sured that Miele’s application special-
ists will provide you with a highly pro-
fessional service.
