What Sets the Horizontal Format Apart
Pressurized steam heats loads above 100 °C and destroys microorganisms, including spores, on items that tolerate heat and moisture. A horizontal autoclave sterilizer applies this at a scale where loading height, floor space and utility connections dominate planning, which is why it is common in pharmaceutical plants and hospital sterile services. As a large capacity autoclave, it trades the compact footprint of vertical units for volume and flow.
The Horizontal Autoclave 26-HAC402 is a 600L horizontal autoclave with a double-door, microprocessor-controlled design, a motorized sliding door with pneumatic sealing, and a listed sterilization temperature of 139 °C.
From Load Trolley to Sterile Release
A horizontal steam sterilizer follows the stages below, with the listed features of the 26-HAC402 noted where the product page names them.
- 1
Load
Items are placed on racks or a trolley and moved into the chamber through the loading door.
- 2
Seal
The door closes and a pneumatic seal is applied. The listing names a motorized sliding door with pneumatic sealing.
- 3
Heat and purge
Steam enters, displaces air and brings the chamber to the set conditions.
- 4
Hold
The set temperature is held for the programmed time. The listing gives 139 °C as the sterilization temperature.
- 5
Exhaust and dry
Pressure is released. The door interlock stays engaged until chamber pressure falls to 0.027 MPa.
- 6
Unload
The load leaves through the unloading door on the sterile side, in a double-door installation.
The page describes the unit as automatic and microprocessor-controlled, with a digital LCD showing live status. It does not describe the program list, vacuum stage or drying stage, so those details should be taken from the manual.
Practical Use Cases in Production and Hospital Settings
Horizontal laboratory autoclave use covers a wider range of loads than a vertical unit usually handles in one session. The product page lists media, instruments, dressings and intravenous equipment, rubber closures and glass components, and heat-resistant items for aseptic work.
Pharmaceutical manufacturing
Rubber closures, glass components and process equipment parts are sterilized in volume before use in aseptic workflows.
Bulk media preparation
Large batches of culture media for aseptic techniques, where one cycle replaces many small ones.
Hospital sterile services
Surgical and laboratory instruments, dressings and intravenous equipment are processed in trolley loads.
Glass and component processing
Glass equipment and heat-resistant components that need steam contact on all surfaces before sterile use.
Horizontal laboratory autoclave machine use at this scale also depends on logistics outside the chamber, such as trolleys, staging space and the layout between loading and unloading areas.
Liquids, Wrapped Packs and Dry Goods Need Different Cycles
The title of this guide mentions liquids and wrapped instruments, and both need more than a temperature and a timer. The table links each load to the cycle behavior it needs and to what the product page actually states.
| Load | Cycle need | What the listing states |
|---|---|---|
| Liquids in bottles | Slow exhaust without vacuum pulses, which would boil the liquid | Lists media sterilization, with no liquid cycle detail |
| Wrapped instrument packs | Air removal before the hold, then drying | Lists instruments, with no vacuum stage described |
| Dressings and porous goods | Air removal and drying so steam penetrates and packs leave dry | Lists dressings and intravenous equipment, with no air removal detail |
| Glass and rubber closures | Steam contact on all surfaces, then drying | Lists these components as applications |
Where wrapped or porous loads are central, confirm in writing that the unit includes an air removal stage and the program types the work needs. Units built around a vacuum stage are covered by the pulse vacuum autoclave range.
Site Preparation and Utilities
A 600 L unit is installed rather than placed. The utility figures below come from the 26-HAC402 listing and should be checked against the site before any order is planned.
| Utility or site item | Listed requirement | Planning note |
|---|---|---|
| Steam supply | 0.4 to 0.6 MPa, 30 kg | Needs a steam line, and the page gives no time basis for the 30 kg figure |
| Water supply | 0.2 to 0.3 MPa, 45 kg | Needs a water line, and the page gives no time basis for the 45 kg figure |
| Compressed air | 0.6 to 0.8 MPa | Operates the pneumatic door seal |
| Electrical power | 36 kW | Voltage and phase are not stated on the page |
| Size and weight | 1500 x 1350 x 1950 mm, 1100 kg net, 1500 kg gross | Determines room access, floor loading and service clearance |
The document also lists a motorized door and low water protection, which add maintenance points beyond the chamber itself. Planning should include a route for delivery, since a 1500 kg crated unit does not fit through standard doorways.
Horizontal and Vertical Formats Compared
Format decides how loads move, how much floor space is used and how the unit fits into a process flow. The comparison below describes typical behavior rather than a single model.
| Format | Loading | Typical fit | Consideration |
|---|---|---|---|
| Horizontal | Front-loading, trolleys, often double door | High-volume, repeatable batches and production flow | Larger floor area and fixed utility connections |
| Vertical | Top-loading, load lowered into the chamber | Routine batches in a compact footprint | Lifting heavy loads and smaller maximum volume |
The largest vertical model, the Vertical Autoclave LE-VA303, holds 200 L, so volume above that range moves to the horizontal format. Both sit in the wider autoclave category, and throughput and site layout usually settle the choice.
Operating Basics for Large Loads
A short horizontal laboratory autoclave how to use outline follows, and the manual for the unit takes priority.
- Check water, steam and air supplies and the door seal before each shift.
- Load trolleys evenly with gaps for steam, and do not exceed the rated load or chamber volume.
- Keep liquids, wrapped packs and dry goods in separate cycles with programs suited to each.
- Do not place wet packs against each other, since moisture traps heat poorly and packs may stay damp.
- Wear heat-resistant gloves and protective eyewear when unloading, and allow loads to cool before handling.
- Use indicators suited to the load and keep cycle records for each run.
- Follow lockout procedures for service, as steam, pressure and moving doors are all hazards.
Specifications Worth Reading Closely
Reading horizontal laboratory autoclave equipment datasheets takes some care, because pressure, temperature and utility figures interact. The figures below come from the 26-HAC402 listing, which is also summarized in its product catalog.
| Parameter | 26-HAC402 listing | Why it matters |
|---|---|---|
| Capacity and chamber | 600 L, 1200 x 610 x 910 mm | Sets rack and trolley size and the longest item |
| Temperature | 139 °C sterilization temperature | Above the common 134 °C set point |
| Pressure | Sterilization pressure 0.25 MPa, working pressure up to 0.22 MPa | The two figures differ, and the reference basis is not stated |
| Doors | Double door, motorized sliding with pneumatic sealing | Supports a one-way flow between unsterile and sterile areas |
| Safety | Door lock until 0.027 MPa, low water power cut-off with alarm | Limits unsafe door opening and dry heating |
| Control | Microprocessor, digital LCD, automatic operation | Supports repeatable cycles and live monitoring |
The page shows a few inconsistencies. The meta description refers to the model as LB-600, and the door is described as both motorized or sliding in one place and motorized sliding in another. These are worth confirming with the supplier.
Selection Mistakes to Avoid
- Choosing on chamber volume alone. Rack size, trolley design and usable height decide real throughput.
- Skipping the load review. Liquids, wrapped packs and porous goods may need program types the listing does not describe.
- Underestimating site work. Steam, water, compressed air, a 36 kW supply and a 1500 kg delivery all need planning.
- Ignoring the room layout. A double-door unit works only when the wall opening, both work areas and traffic flow are planned together.
- Overlooking the drying stage, which determines whether packs leave dry.
- Comparing horizontal laboratory autoclave manufacturers on capacity alone. Documentation, installation support, spare parts and service affect long-term use.
- Reading the word automatic as unattended. A horizontal laboratory autoclave machine of this size still needs trained staff for loading, unloading and checks.
Exploring the Wider Horizontal Range
This unit belongs to the horizontal group at Lab Expo, in a portfolio that also includes medical autoclave models. According to the horizontal autoclave range page, the group serves high-capacity workflows where large instrument loads need uniform steam distribution, with stainless steel chambers and digital control of temperature, pressure and cycle parameters.
Within this category, options are usually weighed on chamber volume, door type, program range, utility demands, control features and installation needs. The complete Autoclave category lists the configurations available. An industrial horizontal autoclave in this class is typically specified together with the room, utilities and workflow around it.