Front-loading benchtop autoclaves without drying

The AHS-N Series benchtop autoclaves without drying by Raypa are ideal for straightforward and cost-effective sterilization of a wide range of laboratory materials. They meet the fundamental sterilization needs of laboratories in industrial, educational, and research facilities to increase productivity and simplify sterilization operations.

These autoclaves are suitable for sterilizing both solid and liquid loads, including glassware, plastics, metal utensils, liquids, culture media, and other laboratory items.

Suitable for the general laboratory, they are optimized for easy operation, include many safety features to protect users in their daily routine, and are easy to install as they are plug-and-play.

Sterilization applications

The AHS-N Series is suitable for a variety of general laboratory sterilization applications, including:

• Liquids and culture media
• Glassware
• Plastics and metal instruments
• Laboratory waste bags*

*For laboratory waste bag sterilization, the sterilization time should be extended, the chamber should not be fully loaded, and chemical and/or biological tests should be used to validate correct sterilization of the load.

Key advantages

• AISI-316L stainless steel sterilization chamber and door for high corrosion resistance
• Incoloy® 825 heating elements inside the chamber for efficient heat transfer
• PID-controlled system with programmable cycles and flexible configuration options
• PT-100 Class A chamber temperature monitoring
• Optional core probe control for liquid loads (AHS-50-N and AHS-75-N)
• Optional agar mode for controlled post-sterilization temperature holding (40–80°C)
• Faster cooling option for solid cycles via steam release function
• Optional data management software and integrated or external printer
• Plug-and-play installation with no water or drainage connections required

Efficient and economical sterilization solution

The AHS-N Series is built to deliver robust performance while keeping resource consumption low. It optimizes water, energy, and operator time to support efficient laboratory workflows.

Their compact benchtop design makes them suitable for laboratories with limited space, while maintaining the performance level of larger systems.

Compact design and easy installation

The sterilization chamber and door are manufactured from high-grade AISI-316L stainless steel, offering strong resistance to corrosion and long service life. Powerful Incoloy® 825 electric heating elements inside the chamber provide internal heating and are protected by a safety grid.

All components are selected from high-quality suppliers and the equipment is manufactured in accordance with applicable European Union safety, quality, and regulatory standards.

The system includes an integrated independent water tank, eliminating the need for fixed water or drainage connections. This makes the units fully plug-and-play and easy to install.

How does the AHS-N autoclave work? 

During a sterilization cycle, the load goes into the vessel trays or basket. After manually filling the independent water tank and sterilization chamber with purified water, the autoclave heats the water to generate saturated steam and removes air from the chamber until it reaches the selected sterilization conditions.

Heating phase

The system uses powerful Incoloy 825 electric heating elements inside the sterilization chamber to heat water and produce saturated steam throughout the chamber, while a grid protects the elements.

Sterilization phase

Once it reaches the programmed sterilization temperature, the sterilization phase begins. It maintains the temperature for the selected sterilization time using a PT-100 Class A temperature probe located inside the chamber.

For liquid sterilization processes on AHS-50-N and AHS-75-N models, there's an option to control this phase using a flexible PT-100 Class A temperature probe positioned inside the sample.

Cooling phase

After sterilization, a natural cooling phase begins. Steam and water inside the chamber around the heating elements automatically return to the independent water tank. An acoustic signal indicates when it reaches a safe temperature and you can open the chamber.

Cycle-specific options: 

• For solid loads, you can activate a manual steam discharge function to shorten the cooling phase
• For liquid cycles, optional core probe control is available
• Agar mode can maintain a stable temperature between 40–80°C to prevent culture media from gelling

Control system and programming

The AHS-N Series comes with a PID microprocessor controller offering 4 predefined programs and 6 customizable programs. It is possible to adjust parameters such as temperature, time, and cycle type, including solid, liquid, agar mode, and optional core probe operation. The system also supports programmable auto-start.

Safety features for daily laboratory use

The AHS-N Series includes multiple safety systems to protect operators during routine operation. These features include:

• Overpressure safety valve
• Thermally insulated door
• Safety thermostat
• Open door detection system
• Independent pneumatic safety system that locks the main door while positive pressure remains inside the sterilization chamber

The equipment is manufactured according to applicable European Union quality, regulatory, and safety standards.

Plug-and-play installation

With chamber capacities ranging from 22L to 79L, the AHS-N Series offers flexible capacity in a compact footprint. Despite their size, these autoclaves provide performance comparable to full-size vertical systems.

Installation is simple: the system requires no plumbing and only needs an electrical connection. The integrated water tank allows fully self-contained operation.

Available benchtop autoclaves without drying:

What is the difference between a vertical and a horizontal autoclave?

Read everything you need to know about autoclaves on this page.