4.3 Heat Seal Materials
The 4s3™ is compatible with the widest range of heat sealing materials available on the market. Details of available
materials can be found in the following table, 4titude
®
literature, or by visiting the 4titude
®
website www.4ti.co.uk.
Note: 4titude
®
also offers sample sheets for evaluation purposes. Please contact us at info@4ti.co.uk.
Code Description Dimensions Sheets/Case
4ti-0541 Clear Heat Seal, sheets 125 mm x 78 mm 100
4ti-0575 Clear Weld Heat Seal Mark 2, sheets 125 mm x 78 mm 100
4ti-0581 Clear Heat Seal 3730, sheets on perforated roll 125 mm x 78 mm 1,000
4ti-05481 Clear Heat Seal Plus, sheets 125 mm x 78 mm 100
4ti-0521 Peel Heat Seal, sheets 125 mm x 78 mm 100
4ti-0521/RA-TAB Random Access Peel Heat Seal, With Tabs, sheets 127 mm x 100 mm 100
4ti-0521/RA-8 Random Access Peel Heat Seal 96/8, sheets 127 mm x 100 mm 100
4ti-05231 Universal Peel Heat Seal, sheets 125 mm x 78 mm 100
4ti-0587 DMSO Resistant Peel Heat Seal, sheets 125 mm x 78 mm 100
4ti-0531 Pierce Heat Seal, sheets 125 mm x 78 mm 100
4ti-0531/GR Pierce Heat Seal, sheets, with printed grid reference 125 mm x 78 mm 100
4ti-05381 Pierce Heat Seal Strong, sheets 125 mm x 78 mm 100
4ti-05381/RA Random Access Pierce Heat Seal Strong, sheets 127 mm x 100 mm 100
4ti-0536 Foil Heat Seal, sheets 125 mm x 78 mm 100
4ti-0547 Polystyrene Foil Heat Seal, sheets 127 mm x 100 mm 100
4ti-0591 Thermal Bond Heat Seal, sheets 125 mm x 78 mm 100
4ti-0597 Gas Permeable Heat Seal Mark 2, sheets 125 mm x 78 mm 100
4ti-0597/ST Gas Permeable Heat Seal Mark 2, sheets, sterile 125 mm x 78 mm 10 x 10
4ti-0541/SLIT Gas Permeable Clear Heat Seal, sheets 125 mm x 78 mm 100
4ti-0543 96 INDI Heat Seal, sheets 125 mm x 78 mm 50
4.4 Sealing Parameters
Once you have established that your plate quality is sufcient, you are using the correct plate support adapter
and you have chosen your sealing material, it will be necessary to optimize the sealing parameters of time and
temperature. This can be achieved using empty plates.
In general terms it is sensible to keep one of the parameters constant and vary the other when optimising. For
example, set the sealing time to 2 seconds and gradually increase the temperature , monitor the results until you
are satised with the quality of the resulting seal. You can then further ne tune the quality by adjusting the time,
maintaining your desired temperature, in 0.1 second increments.
The following sealing temperatures and times are for guidance only. Sealing efciency varies depending on the
plate type used. All sealing parameters were estimated using software version 1.07.