Introduction; Description - seward STOMACHER 80 Biowasher Mode D'emploi

1.

INTRODUCTION

This manual contains operating instructions for the Stomacher
3500 Biowasher and 3500 Thermo models. Sections 5, 6, 7 and 8 respectively contain model-
specific instructions. All other instructions are common.
The Seward Stomacher
at Colworth House; Bedfordshire as a solution to many of the problems previously experienced in
microbiological sample preparation. Subsequently it was decided to market the instrument in
response to the interest expressed in the Stomaching technique to meet the ever- increasing
demands for sample preparation in a fast, consistent and efficient way. Since then, Seward have
continually developed the Stomacher
exacting performance, high quality and exceptional reliability.
This manual provides the user with all the information to install, operate and maintain the Seward
®
Stomacher . Please read the manual carefully before using this equipment.
CAUTION: - This equipment should not be used if damaged in any way. If in doubt please
contact your local Seward authorised service centre.
Should any other questions arise please do not hesitate to contact the Seward Customer
Service Department on
Telephone: +44 (0)1903 236411
Facsimile: +44 (0)1903 219233
info@seward.co.uk
E-mail:
2.

DESCRIPTION

The Seward Stomacher
within a special disposable bag. The instrument acts on the bag in an action similar to the action of a
stomach, hence the name Stomacher
The instrument is comprised essentially of an electric motor-driven worm gear unit with twin output
shafts coupled to flexible crank mechanisms, which in turn operate two reciprocating paddles. The
paddles act on the flexible plastic bag to create the blending forces termed the 'stomaching' action.
An important feature of the system is that the working parts do not come into direct contact with the
sample being processed. The main body of the instrument is aluminium alloy, finished with durable
hygienic paint; the door and linkage assemblies are stainless steel. All the control functions and
displays are ergonomically grouped and conveniently situated.
In broad terms, the main difference between each of the different Stomacher
capacity (the Stomacher
although the bag compartment is larger to allow for uncompressible samples). The Stomacher
3500 Thermo is also equipped with a heated door panel to allow sample heating to be carried out
during the stomaching process.
Protection from the moving parts inside the sample compartment is provided by an automatic cut-
out switch, which is activated when the door is opened, switching off the paddle operation (and also
the heater blanket in the case of the Stomacher
Issue: 3.2
STOMACHER
USER INSTRUCTIONS
®
was originally developed in conjunction with Unilever's Research Centre
®
to maintain its position as the market leader ensuring
®
is a unique homogenising instrument in which the sample is blended
®
.
®
3500 Biowasher has the same bag capacity as the 3500 and 3500 Thermo
®
®
80 Biowasher, 400 Circulator, 3500,
®
3500 Thermo).
®
models is the sample
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