40L Benchtop Steam Autoclave

Our fastest autoclave. Fully featured industrial sterilization on your lab bench.

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40L Benchtop Steam Autoclave

Our fastest autoclave. Fully featured industrial sterilization on your lab bench.

Our smallest autoclave, the 40L Benchtop has the same core design and programmable control system as our larger sterilizers, and the fastest cycle times of any model we offer. The 40L Benchtop is 8-inches shallower than our 60L Benchtop autoclave, easily fitting on a 30″ countertop, utility cart, or mobile equipment stand. Because of its compact size, it’s one of our most popular laboratory autoclave models for export. Nonetheless, this highly mobile unit accommodates 40 125mL flasks, three 2L flasks, or two racks of test tubes.

All too often small labs shopping for benchtop sterilizers end up being sold low-end tabletop medical sterilizers. Unfortunately, the plumbing and pressure vessels in these “economical” sterilizers just aren’t up to research tasks. They start to break down in the first 24 months, and may be totally unrepairable after just five years.

True research-grade benchtop autoclaves offer all the flexibility, ease-of-use, and reliability that a small lab needs:

  • Plug-n-play simplicity with fully featured programmable control systems
  • Quality construction, with ASME-stamped 316L stainless steel pressure vessels
  • Control systems optimized to make running media prep, liquid, and waste loads fast and convenient


Steam Source:Electrically generated in-chamber
Operating Range:Up to 136°C, 2.2 Bar (277°F, 32 psi)
Working Dimensions:13.8” (350mm) diameter x 16.5” (420mm) deep
Chamber Material:Brushed grade 316L stainless steel
Door Material:Burnished grade 316L stainless steel



Priorclave benchtop autoclaves are built in the UK for years of trouble-free operation, even in the most adverse conditions. Their modular design is completely upgradable to meet your evolving needs. Each unit is designed for safe operation under all conditions, and fitted with the industry-favored Tactrol® 2 Control System. Priorclave autoclaves offer an unparalleled 36-month parts and labor warranty, and a 20-year pressure vessel warranty.


At Priorclave, the safety of your staff and students comes first. Our Quickseal 2 door, with Permission-based Door Release , is fitted with thermal and pressure locks to prevent opening at load temperatures above 80°C (176°F) and pressures above 0.2 Bar (2.9 psi) (as per BS 2646). The door is also fitted with a Redundant Safety Gate, so that any residual pressure can safely escape before the door can move freely (in accordance with the UK Health and Safety Executive’s note PM73). All units come with a Pressure Safety Valve set to 2.5 Bar (36.3 psi) and a 150°C (302°F) thermal cut out (per BS 6759); selected external panels and surfaces are thermally insulated. All front loading models have non-tip shelves.

Priorclave is the only manufacturer offering the same fully featured programmable control system on every model, from the smallest laboratory benchtop sterilizer to the largest industrial pass-through unit. The Tactrol 2 system puts every operating parameter within your control, with no re-training required as you move from one unit to another. Using our Tactrol 2 Control System, operators can limit user access to specific pre-programmed, validated cycles, via fail-safe one-button start or key switch activation. Program modifications are likewise key switch or password protected.

All Priorclave autoclaves comply with current US, Canada, UK, and EU safety regulations. They are manufactured under an ISO 9001:2008 quality management system in our UKAS-accredited facility. Our autoclaves and control systems are ETL listed and EMC certified, and feature ASME-stamped pressure vessels . These pressure vessels are manufactured entirely in-house, and tested to 1.5 times their maximum working pressure. They have full insurance approval for pressure vessel design and construction and are CE Marked under the Pressure Equipment Directive PD5500:2000 Cat 3, Certificate Number SS42059010-2 Rev 1. They also conform to the general requirements of BS 2646 and are CE Marked for BS EN61010-2-41, Low Voltage and Electromagnetic Compatibility.


Priorclave Compact 40L Standard Features:
  • One-Button Start
  • Flexible Tactrol® 2 Control System
  • Media Warming and Delayed Start
  • Quickseal 2 Single Action Door Closure System
  • Permission-Based Door Release
  • Electronic Cycle Logging – USB port
  • Automatic Timed Freesteaming
  • Assisted Load Cooling
  • Chamber Pressure Gauge
  • Thermocouple Entry and Test Ports
  • 316L Stainless Steel Chamber and Door
  • Two Full Width Stainless Steel Loading Shelves
  • Caster Mounted Carts Available for Ease of Positioning and Service
  • Biomaster® Antimicrobial Surfaces
  • Energy and Water Conservation
  • Tactrol 5 Program Memory
  • Tactrol 10 Program Memory
  • Tactrol 10 Program Memory Upgrade
  • Tactrol Self-Monitoring System
  • Setting Lock Keyswitch Facility
  • Pulsed Free Steaming
  • Load Sensed Process Timing
  • Automatic Water Fill System
  • Water Softener
  • Purified Water Level Sensor
  • Stainless Steel Pipework
  • Clean Steam Generation
  • Air Intake Filter System
  • Exhaust Filtration System
  • Air Ballast System – External Air Supply
  • Priorclave Tactrol Printer
  • Load Temperature Indication
  • Chamber Pressure Indication
  • Armored Wandering Probe
  • External USB Port
  • Combined Combined Pre-Cycle Vacuum & Vacuum Cooling
  • Post-Cycle Vacuum Drying
  • Automatic Cycle Repeat
  • Stainless Steel Discard Container
  • False Floor for Discard Container
  • Loading Cassette
  • Stainless Steel Loading Basket
  • Stainless Steel Waste Container
  • Drain Condenser
  • 2 Years Spares Kit
  • 3 Years Spares Kit
  • IQ/OQ Documentation

Technical data

Working Volume40 liters
Operating RangeUp to 136°C, 2.2 Bar (277°F, 32 psi)
Loading FormatFront Loading
Loading HeightBenchtop
Heat Input3kW Single Phase
Working Dimensions diameter x depth
350mm x 420mm 13.8” x 16.5”
Bottom Shelf Dimensions w x d x h
9.7”W x 16.5”D with 11.6” clearance (upper shelf removed)
Top Shelf Dimensions w x d x h
13.6”W x 16.5”D with 6.9” clearance
Outside Dimensions w x d x h
520mm x 610mm x 640mm 20.5” x 24” x 25.2”
Bench Weight (unloaded)
70Kg (154lbs)
Minimum Installation w x d x h (and Door Swing)
826mm x 968mm x 793mm 32.5” x 38.1” x 31.2” (520mm, 20.5”)

Ordering info

40L Benchtop Steam Autoclave

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