Specifications

2. Important Information for
Good Operator Practice
Spillages
Materials with
specific gravity in
excess of 1.2
In the event of liquid spillage, the affected surfaces should be cleaned immediately.
The rotor and accessories should be removed and, if necessary, the inner bowl
should be removed for thorough cleaning, (see Section 10).
Regular cleaning of the centrifuge is highly recommended to avoid the build up of
contamination.
The maximum speed of each rotor is calculated on the basis of samples with a
specific gravity of 1.2. If materials of a higher specific gravity are used, then the
maximum rotor speed must be reduced according to the formula below.
M =
1.2 X N
2
rpm
Corrosive
materials
Infective samples
Where M =
N =
S =
New maximum speed
Normal maximum speed
Specific gravity of sample
Where particularly corrosive materials are to be centrifuged, the samples should be
placed in sealed containers and all necessary precautions observed. The following
list gives examples of corrosive materials used in laboratories.
Phenol/cresol/water, chloroform/isoamyl alcohol, salt solutions (especially am-
monium sulphate), solutions of ammonium hydroxide and acidic solutions eg
hydrochloric, trichloracetic and perchloric acids.
Other materials are often equally corrosive and the user is responsible for checking
the characteristics of solutions used.
Very special care is necessary when infective materials are to be centrifuged.
Sealed containers should always be used. The caps should be doublé checked to
ensure that they are not damaged and fit correctly prior to starting the centrifuge.
After use, containers and caps should be sterilised immediately, using a non-
corrosive method.
IT IS ADVISABLE TO HAVE THIS CENTRIFUGE SERVICED BY A
COMPETENT ENGINEER, PREFERABLY THE MANUFACTURER'S
REPRESENTATIVE, EVERY SIX MONTHS, (SEE SECTION 10).