Also called: Portable autoclave, Compact autoclave, Mobile steriliser
Portable Autoclave: Compact, Stovetop and Field Options
“Portable” covers very different machines. Here is what each type can safely sterilise, and how to keep a steriliser reliable when it moves.
Last updated:
Three things people call a portable autoclave
Compact tabletop autoclave
An electric unit of around 8–12 litres, small enough to move between rooms or sites. It is a full steriliser — Class N, S or B depending on the model — just smaller. It still needs mains power, distilled water and a stable bench.
Stovetop pressure-cooker steriliser
A heavy pressure vessel heated on a gas or electric hob, with a pressure gauge and relief valve. Air is removed only by venting, timing is manual, and there is no printout or drying phase.
Field and vehicle set-ups
A compact autoclave installed in a mobile clinic, van or outreach base and run from mains, a generator or an inverter.
What each type can safely sterilise
Air removal, not size, decides what a steriliser can process.
| Type | Air removal | Suits | Does not suit |
|---|---|---|---|
| Compact Class B | Fractionated vacuum | Pouched, hollow and solid instruments | Large packs or high daily volume |
| Compact Class N | Passive (steam displacement) | Unwrapped solid instruments used straight away | Pouched, hollow or porous loads |
| Stovetop pressure cooker | Manual venting only | Lab media and simple unwrapped items where there is no power | Clinical instruments that need pouches, records or hollow-load proof |
Read next Class B, N and S explainedAutoclaves for beauty and tattoo studios
Why stovetop units fall short for clinics
- No vacuum, so air can stay trapped in pouches, lumens and handpieces.
- Temperature and time are read by eye from a gauge and a clock, with no printout for your records.
- No drying phase — packs come out wet and cannot be stored as sterile.
- Usually not registered with the MDA as a steriliser for medical instruments.
- They still have a place in field labs and teaching, used with care and with indicators in every load.
Power, water and space
| Need | What to plan |
|---|---|
| Power | Check the rated power on the label — compact units often draw 1.5 kW or more. Use a dedicated socket, never an extension reel. |
| Generator or inverter | A stable pure sine-wave supply with plenty of headroom; unstable power aborts cycles and can damage the controller. |
| Water | Distilled or deionised water carried in sealed containers. |
| Ventilation | The maker’s clearance around vents, even inside a vehicle. |
| Bench | Level and stable — many units rely on being level for the reservoir and drain to work. |
Moving an autoclave without losing reliability
- Let the chamber cool and drain both reservoirs before moving.
- Keep the unit upright, door closed and secured against sliding.
- Re-level it and check the door seal at the new site.
- Before patient loads, run a vacuum leak test and an air-removal test (Class B).
- For outreach days, consider sterilising pouched kits at base and carrying them sealed, or using single-use sterile kits, instead of sterilising on site.
Read next Keeping pouched instruments sterile in storageChoosing a chamber size
Related guides
Autoclave supply near you
Delivery, installation and training across Malaysia from Batu Caves, Kota Kinabalu and Kuching.
Frequently asked questions
Is a portable autoclave good enough for a clinic?
What is the smallest clinic autoclave?
Can a pressure cooker sterilise instruments?
Can a mobile clinic run an autoclave from a generator?
Get a written quotation
Tell us your clinic or lab type, daily workload and location. We match suitable models and send a written quotation with delivery, installation and training spelled out.