USB270BTDV - 153L (per chamber) Duaclave™

The Duaclave™ is the ideal autoclave where laboratory space is at a premium. The Duaclave™ features two identical chambers, one directly above the other.

Combining two units within one frame, the two chambers operate completely independently.

This model is suitable for sterilizing:

  • Liquids (media)

  • Discard

  • Glassware

  • Laboratory Instruments

This model features

  • Two fully programmable touch screen color controllers

  • Electro polished stainless steel chambers

  • A base shelf within each chamber

  • Timed free steaming

  • Holdwarm/Delayed start feature

Please note: When considering options for this sterilizer, please remember that in most cases you will require 2 of each option i.e. you would require 2 printers, one for each chamber. This is because each sterilizer can be operated independently so cycles can be started at different times.

Technical details - USB270BTDV

The Duaclaves™ are built with heaters in the base of the chamber, effectively with 2 independant chambers mounted one above the other in a specially designed frame. Water is poured directly into each chamber of the autoclave by the user and then each color touch screen advises when the water is at the correct level.

During the cycle at the freesteaming stage, a small amount of condensate is generated which leaves the autoclave by a flexible hose located at the back of the unit. The flexible hose from each autoclave joins at a singular drain connection. At the end of each cycle the user is then prompted by the touch screen display to top up the water level to the correct level before starting another cycle.



Model Number/Type:

USB270BTDV Duaclave™

Steam Source:

Heaters in the Chamber


153 litres (per chamber)

Power Supply:

Single/ 3Ph, 7/10 kW (each)

Chamber dia x depth

450mm x 865mm (each chamber)

Overall Dims (w x h x d)

685mm x 1855mm x 1310mm


Integral Data Printer - REF: AAR130

This printer provides a permanent and traceable record of: Time, Temperature, Pressure, Batch No and Cycle Name. There is also provision for operator signature; the printer also provides reports of cycle settings and servicing information.

Astell Scientific Printer

RS232 Interface - REF: AAR120

The addition of the RS232 option allows cycle progress to be monitored (via HyperTerminal) on an external computer equipped with suitable software.


Ethernet Interface - REF: AAR122

The addition of the Ethernet interface allows the visual display of the color touch screen controller on another device. This works by using a VNC Viewer (not supplied) and a PC or other hardware capable of running VNC.


IQ/OQ Documentation - REF: IQ/OQ001

The IQ/OQ documents package provides the user with blank documents for them to complete. The IQ section includes details of calibration equipment, an order Acknowledgement, PED (Pressure Equipment Directive) Compliance, a Declaration of Conformity, FAT (Factory Acceptance Test), a Drawing Schedule, ISO 9001:2008 Certification, Pressure vessel specification and door safety checks. The OQ Documentation includes an Automatic control test sheet (per cycle) and Chamber temperature distribution (per cycle)
Please note: This is our standard IQ/OQ Documentation package.


Morrison Discard Containers - AAN300

Morrison Discard Containers are available in the following size:

290mm width x 330mm depth x 280mm height - Astell REF: AAN300

Please note: The image shown may refer to a different Morrison Discard Container to that supplied.

Astell Morrison Discard Container

Additional Shelf Kit

The additional centre shelf kit provides you with a central shelf to increase the usable space of the autoclave chamber. A further top shelf is also available if required. Please contact us for details.

Astell Swiftlock Shelf Option

BSL 3 Compliance - REF: AVQ006

Biosafety Level 3 compliance is often required when dealing with high risk sterilization requirements. A bacterial retentive filter fitted onto the exhaust ensuring nothing leaves the chamber without being sterilized.

Note: Filter may vary from that pictured.

Category 3 Filter Option

Load Related Options

Load Sensed Process timing - REF: AAR014

Load Sensed Process Timing allows the sterilization cycle to be controlled via the temperature achieved in the centre of the load. The operation of load sensed process timing is controlled via the ‘Logi’ touch screen controller. A ‘wandering’ probe, situated within the chamber is inserted into the load, or load simulator, and initiates the sterilization period once the probe reaches the programmed threshold temperature.

Load Sensed Process Timing

Cooling Related Options

Assisted Air Cooling - REF: AAP006

A powerful external fan helps to reduce cool down time. The operation of the assisted air cooling system is controlled via the ‘Logi’ color touch screen and is available on all models as an additional option, except for those fitted with a vacuum.

Assisted Cooling Option

Advanced Water Cooling - REF: AAP100

Water is circulated through cooling coils in direct contact with the outside of the autoclave chamber, resulting in the rapid decrease of the internal chamber temperature. Advanced water cooling offers substantial time saving and is ideal for the busy Laboratory.

Water Cooling Option

Autodrain Option - REF: AAP018

Can be selected on any cycle and will substantially decrease the time required to cool the chamber to a temperature where the door can be safely opened, especially when used in conjunction with the advanced water cooling (AAP100) or assisted air cooling (AAP006). At a pre-selected pressure during the cooling phase of the cycle, any remaining water in the chamber is evacuated to the drain. As the discharge water will be approx. 100°C we would highly recommend that the 'exhaust heat exchange system' (AAN240) is ordered in conjunction with this option as well as the "Autofill" (AAP019) to avoid having to manually refill the chamber with water at the end of each cycle.

Autodrain Option

Installation/Maintenance Options

Autofill Option - REF: AAP019

The 'Autofill' option automatically maintains adequate water level within the chamber (for Heaters in Chamber models only). The water inlet is controlled by a level switch and complies with water bylaw regulations. The unit is readily connected to the water supply via a 1.5m flexible hose (supplied).

Autofill Option

Exhaust Heat Exchange System - REF: AAN420

The exhaust heat exchange system is only for standard units with the heaters in the chamber, due to the fact it's primary purpose is to reduce the temperature of fluid leaving the chamber rather than steam. This option to significantly reduce the temperature of the exhaust/waste in situations where heat resistant drains are not present. N.B. Requires a mains water supply.

Exhaust Heat Exchange Option

Contact Astell Inc

To enable us to quote you as quickly as possible, please let us know the following in your message:

  • Are you sterilizing any fluids?

  • Are you sterilizing any wrapped instruments or fabrics?

  • Are you sterilizing anything other than glassware, plastics or media?