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Our #1 top-sellers worldwide! Why? Because vertical autoclaves can accommodate the tallest flasks, fermentors, and bioreactors at one-third the price of a comparable front-loading autoclave. Priorclave’s top loading autoclaves are among the most compact full-size units on the market today. Compared to similar-sized medical-grade rectangular-vessel units, cylindrical autoclaves are easier to operate, less expensive to maintain, and more reliable over a longer working life.


Product Description

Top-loading autoclaves are very popular internationally and in for life-science research. Not only do they easily accommodate the tallest flasks, fermentors, and bioreactors, they’re also excellent for waste processing, especially in large batches (pop the lid and drop in the bag, just like a rubbish bin).

By relying on ultra-efficient cylindrical pressure vessels, Priorclave has engineered top-loading autoclaves that feature large capacities, low loading heights, small footprints, and low lifetime operating costs. Every Priorclave is custom built in our London factory, specifically to handle your applications. All top-loading sterilizers can be outfitted for “gravity” or vacuum cycles, with in-chamber or independent heating. They come supplied with a stainless steel load support plate and stainless steel mesh baskets for optimal steam circulation. All models include the most current version of our full-featured, fully-programmable Tactrol Control System.


Does your facility or process pose formidable power, programming, or steam generation challenges? We specialize in custom-engineered solutions and are eager to discuss how best to meet your needs and exceed your expectations.

Model: PS/MID/C60

Model: PS/MVA/C60

Model: PS/QCS/EV100

Model: PS/QVA/EV100

Model: PS/QCS/EV150

Model: PS/QVA/EV150

Standard Features

  • Programmable Tactrol® 2 Control System with simple "one-touch" start
  • Customizable Freesteaming, Load Cooling, Media Warming, and Delayed Start
  • ASME-certified 316L Stainless Steel Chamber and Door
  • Quickseal Single-Action Interlocking Safety Lid—cannot be opened unsafely
  • Stainless Steel Loading Baskets
  • Biomaster™ Antimicrobial Surfaces



The Priorclave Tactrol Printer gives a clear record of times and events during the autoclave cycle along with a printout of parameters during the sterilizing part of the cycle at regular intervals. Depending on autoclave specification this can also include pressure and load temperatures. The printer uses thermal printing technology for a clear and reliable print out and can be set to print either continuously or at the end of the cycle to avoid contact with hot surfaces


Vacuum Drying
An option for Vacuum Priorclaves, when vacuum drying is activated, repeated vacuum cycles are run while the autoclave chamber is heated by external heaters. On fabric items this results in a high level of dryness. The option includes an air intake filter, mesh shelves and drip covers.


Program Memory
Five or 10 program memory options allow program settings to be stored and recalled at the touch of a button.


Load Sensed Process Timing
Guarantees sterilizing times by delaying the sterilizing start time until a temperature sensor placed in the load has heated to sterilization temperature.


Spares Kit
Contains the most commonly replaced parts (heaters, valves, switches) for the Priorclave. Two and Three year versions are available.


Pulsed Freesteaming
On difficult waste loads trapped air is driven out of the load during the heating stage of the cycle by repeatedly opening and closing the autoclave vent. The resultant turbulence removes air and improves steam penetration. Requires a seal drain for the autoclave. Not recommended for liquid loads.


Cycle Repeat
Particularly useful for product testing, this option allows the autoclave to run one cycle after the other without stopping. The total number of cycles can be set from the control panel. For electrically heated Priorclaves a water supply is required. (Not suitable for Distilled, Ultra Pure or RO water supplies.)


Discard (waste) Containers
Liquid tight, stainless steel container for increased cleanliness, hygiene and protection of heaters from media and plastic spillage when sterilizing ‘discard’ loads. Manufactured from stainless steel for optimum transmission of heat into the autoclave load.


False Floor for Discard (waste) containers
Placed in the bottom of the container the floor holds the autoclave bags above any spilled waste in the container, reducing mess on the laboratory floor when the sterilized bags are removed from the container.


Drain Protection
Provides protection for plastic building drains by reducing the temperature of the autoclave exhaust. Requires a reliable water supply at a minimum pressure of 3 BarG.

Technical Resources







Contact Us at +9714 2152799

We can help you with a solution tailor to your specific need.