Disinfection Of Pp-Rotors; Glass Breakage; Life Time Of Rotors, Round And Rectangular Buckets, Accessories - Hermle Z 326 K Operating Manual

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3.1.5 Disinfection of PP-rotors

Autoclaving
The recommended time for autoclaving:
ATTENTION: The sterilization time of 20 min. must not be exceeded. Sterilization again and
again will cause reduction of the mechanical resistance of the plastic material
Before the autoclaving the PP-rotor and adapter must thoroughly be cleaned to avoid the burning in
of dirty residues.
You can disregard the consequences of some chemical residues to plastic materials at ambient
temperatures. But at the high temperatures of the autoclaving those residues may corrode and
destroy the plastic. The objects must be thoroughly washed up with distilled water after the cleaning
but before the autoclaving. Residues of any cleaning liquids may cause fissures, whitening and
stains.
Gas sterilization
Adapters, bottles and rotors may be gas sterilized with Ethylenoxyd. According to the duration of the
application you may give long enough an airing to the items after the sterilization and before using
them again.
ATTENTION: Because the temperature may rise during the sterilization, rotors, adapters and
bottles must not be closed respectively must be totally unscrewed
Chemical sterilization
Bottles, adapters and rotors may be treated with the usual liquid disinfectants.
ATTENTION: Before applying any other cleaning resp. Decontamination method than
recommended by the manufacturer, contact the manufacturer to ensure that it will not
damage the unit or the rotor.

3.1.6 Glass breakage

With high g-values, the rate of glass tube breakage increases. Glass splinters have to be removed
immediately from rotor, buckets, adapters and the rotor chamber itself. Fine glass splinters will
scratch and therefore damage the protective surface coating of a rotor. If glass splinters remain in
the rotor chamber, fine metal dust will build up due to air circulation. This very fine, black metal dust
will extremely pollute the rotor chamber, the rotor, the buckets and the samples.
If necessary, replace the adapters, tubes and accessories to avoid further damages. Check the rotor
bores regularly for residues and damages.
ATTENTION: Please check the relevant specifications of the tubes centrifuges with the
manufacturer!

3.2 Life time of rotors, round and rectangular buckets, accessories

Rotors and rotor lid made of aluminum or stainless steel, have a operating time of max. 7 years
from first use.
Transparent rotor lids and caps made of PC or PP as well as rotors, tube racks and adapters of PP
have a maximum operating time up to 3 years from first use.
Condition for the operating time:
Proper use damage-free condition, recommended care.
30
15 – 20 min at 121°C (1 bar)
Z326K_V3.15 © Hermle Labortechnik GmbH