Automatic Heat Sealer a4S
Crucially the a4S does not require an air supply, allowing for it’s flexible use on standard lab benches as a standalone
unit, or integrated within a robotic set‑up. The sealer has a rapid heating element, for fast start-up, and has a
stand-by function, to save energy when not in use.
The a4S sealer is compatible with a wide range of plates, from 384well and 24well PCR plates to deep well or storage
plates, with an SBS footprint. Varying plate heights, from 3mm to 60mm, can be accommodated with minimal
adjustments on the instrument. Plates are presented in the portrait format and the plate position on the shuttle
allows good access for robotic integration.
Rolls with a width between 75—85mm can be loaded in either of two roll positions, depending on roll length and
available space, enabling the entire instrument to fit under the gantree of most liquid handling robots.
The roll width covers an SBS footprint microplate and the seal is cut at the end of the plate. The seal position can
be adjusted to either lay flat on the plate surface or to give an overhang at one end, to make seal removal more
convenient without interfering with plate stacking.

Features
FLEXIBLE INSTALLATION
Installation
• No need for compressed air — Installation is fast and flexible, internal compressor for highest
reproducibility
• 2 roll positions dependent on available space and roll size — Higher flexibility
• Optional roll cover — Seal protection for sensitive applications
EASY HANDLING
Handling
• Colour touch screen with intuitive user interface — Easy and intuitive usability
• Unlimited, password protected protocols — 3 security levels to save
personalised and SOP temperatures and times
• Rapid heating — Fast ramp up, block uniformity of ± 1°C
• Up to 5,000 seals without manual intervention — True walk-away-system
REPRODUCIBLE SEALING
Sealing
• Reproducible sealing – A fixed pressure and variable time/temperature
settings enable consistency of sealing
• High sealing pressure — Improved seal uniformity on the widest range of
plates
• Sealing cycle time of less than 15sec — Time saving
HIGHEST FLEXIBILITY
Flexibility
• Compatible with a wide range of plate types, including 1536 well
PCR plates — Highest flexibility
• Flexibility of seal material choice — 4titude offers a wide range of
sealing materials for use with the a4S
• Compatible with gas permeable heat seals — No instrument
modification necessary for highest convenience
ECONOMIC EFFICIENCY
Economic efficiency
• Attractive pricing — Save money without compromises
• Auto standby mode — Saves energy and prolongs component life
• 2 year warranty on parts and labour