In the medical, dental, and laboratory fields, sterilization is not just a necessity—it’s a responsibility. Autoclaves play a pivotal role in ensuring all instruments are free from harmful microorganisms, maintaining a safe environment for both patients and professionals. When choosing an autoclave, two of the most common types are Class B and N Class autoclaves. This blog will walk you through the key differences, features, and ideal uses for Class B & N Class Autoclaves, particularly in 9L, 16L, and 23L capacities.
🧪 What is an Autoclave?
An autoclave is a device that uses high-pressure steam to sterilize instruments and tools. It’s widely used in clinics, hospitals, dental practices, tattoo parlors, and research laboratories.
Class B Autoclave: The Gold Standard in Sterilization
Class B autoclaves are considered the most advanced type of tabletop autoclaves. They use pre-vacuum and post-vacuum cycles, ensuring deep sterilization by removing air from every corner of wrapped, hollow, or porous instruments.
Key Features:
-
Fractionated vacuum system (removes air completely)
-
Suitable for hollow instruments, wrapped tools, porous loads
-
High sterilization reliability
-
Complies with EN13060 European standard
-
Ideal for medical, dental, and surgical clinics
Available Capacities:
-
9L: Compact for small clinics or mobile units
-
16L: Balanced for mid-sized practices
-
23L: Perfect for high-volume sterilization needs
N Class Autoclave: Simple & Efficient
N Class autoclaves use gravity displacement to sterilize tools. They are best for solid, unwrapped instruments and are a cost-effective solution for small clinics.
Key Features:
No vacuum pump – uses steam to displace air
Suitable for solid metal instruments only
Easy to use and maintain
More affordable compared to Class B
Available Capacities:
-
9L: Ideal for individual practitioners or labs with low instrument turnover
-
16L & 23L: Suitable for practices needing larger sterilization cycles but not complex load types
Class B vs. N Class: Quick Comparison Table
| Feature | Class B | N Class |
|---|---|---|
| Air Removal | Pre/Post Vacuum | Gravity displacement |
| Instrument Types | Hollow, wrapped, porous | Solid, unwrapped only |
| Sterilization Level | High | Medium |
| Ideal For | Dental, medical clinics | Beauty salons, small labs |
| Cost | Higher | More economical |
Which Capacity Should You Choose?
- 9L: For solo practitioners or low-volume setups.
- 16L: Great for medium-sized clinics with regular sterilization needs.
- 23L: Best for high-demand environments with multiple daily sterilization cycles.
Why Quality Autoclaves Matter
Choosing the right autoclave enhances:
- Patient safety
- Compliance with health regulations
- Instrument lifespan
- Practice efficiency
Whether you need a Class B autoclave for complex loads or a basic N Class for simple instruments, investing in the right device ensures safe and sterile operations every day.