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Also called: Steriliser, Sterilizer, Mesin pensteril

Medical Steriliser (Sterilizer) Machines for Clinics

Steam, dry heat, UV, plasma and ethylene oxide sterilisers compared — and how to tell which one your clinic’s instruments require.

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Which instruments need sterilising

Infection-control practice sorts items by risk (the Spaulding classification).

Critical

Items that enter sterile tissue or the bloodstream — surgical instruments, needles for reuse, implants. These must be sterilised.

Semi-critical

Items that touch mucous membranes or broken skin — dental mirrors, specula. Sterilisation is preferred; high-level disinfection is the minimum.

Non-critical

Items that touch intact skin only — BP cuffs, stethoscopes. Cleaning and low-level disinfection are enough.

Steriliser types compared

MethodHow it worksUse it forWatch out for
Steam (autoclave)Pressurised saturated steam, 121–134 °CMost metal instruments, textiles, heat-tolerant plasticsNot for heat-sensitive items
Dry heatHot air, e.g. 160 °C for 2 hours or 180 °C for 30 minutesGlass, metal, powders, oilsSlow; damages many plastics
Hydrogen peroxide plasmaLow-temperature vapourHeat-sensitive devices in hospitalsCostly; restrictions on lumens and materials
Ethylene oxide (EO)Toxic gas at low temperatureHeat-sensitive devices in CSSD and industryLong aeration; strict safety controls
UV cabinetUltraviolet light on surfacesStorage or surface disinfection onlyNot a validated sterilisation method for instruments

Why steam wins in clinics

  • It is the fastest validated method for heat-tolerant instruments.
  • Running costs are low: water, electricity and indicators.
  • Monitoring is well established — physical, chemical and biological tests.
  • Tabletop sizes fit a clinic’s reprocessing corner.

Registration in Malaysia

Under the Medical Device Act 2012 (Act 737), a medical device must be registered with the Medical Device Authority (MDA) before it is imported, exported or placed on the Malaysian market. A steriliser sold for reprocessing medical instruments is itself a medical device, so ask for its MDA registration number and check it on the MDA’s public register before you pay.

Frequently asked questions

Is “steriliser” or “sterilizer” correct?
Both. “Steriliser” is British and Malaysian spelling; “sterilizer” is American. They mean the same machine.
Can I use a baby-bottle steriliser for clinic instruments?
No. Baby-bottle and UV home sterilisers are not validated to sterilise medical instruments and are not registered as medical devices for that purpose.
What is the most common medical steriliser in clinics?
The tabletop steam autoclave, usually a Class B unit of 17 to 23 litres.

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