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Sterilizer Buying Guide


Sterilizer Buying Guide

ALM-75
X20-1000
We offer sterilizers mainly suitable for laboratories, hospitals, and clinics.

When choosing a sterilizer, consider whether the equipment to be disinfected is heat-resistant:

Heat-resistant items: The preferred choice is a Steam Sterilizer (Steam Autoclave), suitable for sterilizing heat- and moisture-tolerant surgical instruments, glassware, culture media, and similar items.

Heat-sensitive items: For equipment that cannot withstand high temperatures, chemical sterilization is recommended. For example, endoscopes, precision electronic devices, and other delicate instruments can be sterilized using a Hydrogen Peroxide Sterilizer.


Difference from Disinfector

1. Disinfector

Refers to equipment that kills most pathogenic microorganisms but may not eliminate all bacterial spores.

2. Sterilizer

Refers to equipment that destroys all microorganisms, including highly resistant bacterial spores, providing the highest level of sterility assurance.
Based on microbial reduction levels:
3-log reduction (99.9% kill): Typically corresponds to high-level disinfection.
6-log reduction (99.9999% kill): Corresponds to sterilization.


Steam Autoclave Buying Guide

Class B (Pre-Vacuum) vs Class N (Gravity/Downward Displacement)

1.Class B (Type B Cycle, Pre-Vacuum)

Pre-vacuum type, suitable for all types of loads including wrapped/unwrapped, solid, hollow/cannulated instruments, and porous materials.

Considered the gold standard in medical, dental, and cosmetic industries.

Pulse Vacuum Technology

Multiple alternating cycles of vacuum and steam injection completely remove air from the sterilization chamber and the items inside. More thorough than standard vacuum cycles and significantly reduces the risk of “wet packs.”

2.Class N (Type N Cycle, Gravity/Downward Displacement)

Downward displacement type, suitable only for unwrapped, solid instruments.

Not suitable for hollow or cannulated instruments.

Vertical vs Horizontal Steam Autoclave

1.Vertical Autoclave (Top-Opening)

Effectively prevents condensation from dripping onto instruments, reducing the risk of “wet packs.”

Maintains sterility of items during storage.

2.Horizontal Autoclave (Front-Loading)

Suitable for frequent or large-scale loading of instruments, especially heavier items.


Hydrogen Peroxide Sterilizer Buying Guide

Hydrogen Peroxide Cold Evaporation Sterilizer

Uses cold evaporation to convert low-concentration hydrogen peroxide into ultra-fine aerosol (<800 nm) that disperses evenly at room temperature. Fast disinfection, no residue, and safe for most surfaces.

Vaporized Hydrogen Peroxide (VHP) Sterilizer

Uses high-temperature flash vaporization to instantly vaporize high-concentration hydrogen peroxide (25–35%), producing fine vapor (<300 nm) that penetrates equipment and HEPA filters. Achieves high-level sterilization with no residue.

ItemCold Evaporation VaporizationHigh-Temperature Flash Vaporization
PrincipleVortex-impact atomization with cold evaporation at room temperatureInstant flash vaporization through a high-temperature channel module
Droplet / Particle SizeAverage particle size < 800 nmParticle size < 300 nm, capable of penetrating HEPA filters
Airflow CharacteristicsNozzle exit velocity > 40 m/sRapid high-temperature vaporization forming a stable vapor flow
Diffusion MethodUniform diffusion via Brownian motion, no auxiliary fan requiredHighly diffusive vapor, capable of reaching complex equipment interiors
Hydrogen Peroxide Concentration≤ 8% food-grade H₂O₂25–35% high-concentration H₂O₂
Material CompatibilityCompatible with color-steel panelsCan be integrated into other production or sterilization equipment
ResidueDecomposes into water and oxygen, leaving no residueDecomposes into water and oxygen, leaving no residue
Sterilization / Disinfection LevelShort cycle time, achieves up to 6-log microbial reductionShort cycle time, achieves up to 6-log microbial reduction
Typical ApplicationsRoom disinfection, cleanrooms, laboratoriesSterilization tunnels, isolators, built-in equipment sterilization systems
To Make The World Closer To The Truth
ZHEJIANG TOP INSTRUMENT CO.,LTD., as a subsidiary of TOP Cloud agri, is a high-tech enterprise specializing in the R&D, manufacturing, sales for laboratory equipments, and provision of comprehensive laboratory solutions.

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