UMB430BTDV - 43L (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 - UMB430BTDV

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 should then be placed into a drain or a heat resistant condensate collection bottle (available separately as an additional option). 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:

UMB430BTDV Duaclave™

Steam Source:

Heaters in the Chamber


43 litres (per chamber)

Power Supply:

Single Phase, 230 volts, 13 Amps 50/60Hz (each)

Chamber dia x depth

350mm x 460mm (each chamber)

Overall Dims (w x h x d)

520mm x 1200mm x 780mm

500ml Duran Capacity

21 (per chamber)

1000ml Duran Capacity

8 (per chamber)

2000ml Duran Capacity

3 (per chamber)

Integral Data Printer - REF: AAR130

This printer provides a permanent and traceable record of: time, temperature, pressure, the batch number and the cycle name. There is also provision for operator signature; the printer also provides reports of cycle settings and servicing information.

Astell Scientific Printer

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

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/OQ

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.


Assisted Air Cooling - REF: AAP007

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

Condensate Bottle (Classic Models Only) - REF: AAN308

The condensate bottle can be connected to any of the ‘Classic’ compact units to allow up to 4 litres of water collection during the freesteaming stage. This option is useful in situations where no easy drainage is available as a lower cost alternative to the ‘Autofill’ version(s).

Condensate Bottle

Five Position Shelf Rack - REF: AAN025

The 5 position shelf rack allows the user to vary what they are sterilizing in the autoclave by moving the positioning of internal shelves (supplied with this option). The AAN025 comes complete with 2 shelves supplied.

Astell Scientific Shelves

Spare Shelf - REF: AAN022

The spare shelf optinon for front loading Benchtop autoclaves.
Note: You must also purchase the 5 position shelf rack to be able to use this option.

Astell Scientific Shelves

Morrison Discard Container - REF: AAN346

Morrison discard containers allow the user to easily load batches of normally awkward shaped items.Dimensions = 180(w) x 260(d) x 200(h) mm.

The UMB430BT can hold TWO AAN346 Discard Containers.

Astell Discard Container

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?