An autoclave that reaches 121 °C is not automatically an autoclave that sterilizes. Validation is the documented, evidence-based proof that your sterilizer — in your department, with your loads, your water and your power — reliably produces sterile instruments every single cycle. It is the backbone of infection-control compliance in any hospital CSSD.
The three qualification stages
Validation is conventionally split into three phases, and each answers a different question:
Installation Qualification (IQ)
Is the machine installed correctly? IQ documents that the autoclave as delivered matches the purchase specification and the manufacturer’s requirements: correct chamber installation, utility connections (steam, water, power, drainage), clearances, and calibration of the instruments that everything else will depend on.
Operational Qualification (OQ)
Does the empty machine perform to specification across its whole operating range? OQ tests the sterilizer itself — empty chamber temperature uniformity, vacuum performance, control accuracy, safety interlocks and alarms — to prove the machine is mechanically capable before any load is trusted to it.
Performance Qualification (PQ)
Does it sterilize your real loads? PQ is the decisive stage: repeated cycles with your actual instruments, packs and containers, using physical measurement and chemical and biological indicators, to demonstrate consistent sterilization of the heaviest, hardest-to-penetrate loads you run. Only after PQ succeeds may the cycle be released for routine production.
What validation means in daily operation
Validation is not a once-and-done certificate. Routine controls keep a validated cycle trustworthy: chemical indicators in every load, regular leak-rate and vacuum testing, scheduled preventive maintenance, and requalification after relocation, major repair or significant modification. Our service division handles compliance testing, repairs and spares (autoclave spares) across the country, with 24/7 standby breakdown support.
Buying a machine that can be validated
Validation starts at purchase. A sterilizer must be capable of holding its parameters tightly, logging cycle data, and reaching deep vacuum for wrapped loads — which is why the RDS Series is engineered with a high-efficiency vacuum system (ultimate vacuum above -90 kPa) and an LDX2101 stainless steel chamber and jacket, backed by a guarantee of up to 10 years on the pressure vessel. Specifying a new sterilizer or bringing an old one back into compliance? Request a quote — a dedicated sales consultant replies within one business day.
Frequently asked questions
What is autoclave validation?
Validation is the documented proof that a sterilizer reliably produces sterile loads: installation qualification (correct installation and calibration), operational qualification (empty-chamber performance to specification) and performance qualification (repeated successful sterilization of real loads).
What is the difference between IQ, OQ and PQ?
IQ verifies the machine is installed correctly and calibrated; OQ proves the empty machine performs to specification across its range; PQ demonstrates consistent sterilization of your actual production loads using physical, chemical and biological indicators.
How often should an autoclave be revalidated?
A validated cycle stays trustworthy through routine controls: chemical indicators every load, scheduled leak-rate and vacuum tests, and preventive maintenance. Full requalification is required after relocation, major repair or significant modification.