Stomacher ® 3500 Thermo; Application; Bag Selection And Filling; Speed Selection - seward STOMACHER 80 Biowasher Mode D'emploi

8. STOMACHER
8.1

Application

There are no set rules in the application of the Stomacher
guide only and not to restrict laboratory technique.
8.1.1

Bag Selection and Filling

For best results it is recommended that only Genuine Seward Stomacher
foods should not harm the bags but hard particles such as bone, grit, fruit-stones and seeds may cause
puncturing. Where a marginal condition exists or any hazardous material is being blended it is
recommended that two bags are used one inside the other.
If required, several bags may be processed simultaneously providing the total volume does not exceed
3500 ml. When doing so, it is recommended that they be layered vertically so that the 'load' is fairly
evenly distributed over the paddle faces.
For volumes less than 400ml an alternative Stomacher
8.1.2

Speed Selection

The NORM (normal) speed is suitable for the vast majority of applications and the instrument will always
set automatically to that position upon powering up. If an alternative speed setting is desired this may be
selected either prior to or during operation of the instrument. When depressed a short signal will be heard
and the corresponding small indicator lamp at the top corner of the touch pad will illuminate.
The LOW speed may be more suitable for delicate work e.g. cell separation to reduce or avoid cell
damage. Use of the HIGH speed can provide better agitation when blending predominantly liquid
substances possibly reducing the processing time. In the event of the power being interrupted the speed
setting will always revert to NORM (normal).
Page 30 of 33
STOMACHER
USER INSTRUCTIONS
®
3500 THERMO
®
3500 Thermo
®
instrument and the following is intended as a
®
model should be used.
®
Bags be used. Deep frozen
Issue: 3.2