More sterilization capacity. Less disruption.
Compact TOMY top-loading autoclaves provide 50 L or 69 L of chamber capacity without requiring fixed plumbing. Compare the SX-500U and SX-700U to find the right fit for your space, electrical setup and routine loads.
Tell us what you sterilize, the size of your largest vessel and your available space. Our team can help review which model fits your application.

SX-700U · 69 L
Choose the capacity and installation that fit your lab
Both models provide programmable operation, standard dual-fan cooling and a self-contained design without a fixed plumbing connection. The primary differences are chamber capacity, footprint and electrical requirements.
Compact capacity with 100–120 V power
For laboratories that need routine sterilization capacity with the smaller SX-Series cabinet footprint.
- ChamberØ31.5 × 63.8 cm
- Cabinet41.0 W × 47.7 D cm
- PowerAC 100–120 V, 17 A
- PlugNEMA 5-20P
- InstallationNo fixed plumbing
- IncludedTwo stainless-steel baskets
More chamber capacity in a compact vertical footprint
For laboratories that need a larger chamber while keeping floor-space requirements manageable.
- ChamberØ36.0 × 67.5 cm
- Cabinet47.0 W × 52.8 D cm
- PowerAC 207–253 V, 13 A
- PlugNEMA 6-15P
- InstallationNo fixed plumbing
- IncludedTwo stainless-steel baskets
Planning note: Chamber volume alone does not confirm whether a specific bottle, flask, vessel or basket configuration will fit. Share your largest vessel dimensions and typical batch with our team before selecting a model.
Add capacity without redesigning your lab
Use floor space efficiently
The top-loading design provides useful chamber depth while keeping the cabinet footprint compact.
Plan without fixed plumbing
A built-in reservoir removes the need for a dedicated water connection or central steam line.
Repeat routine settings
Programmable operation helps shared laboratories save and reuse routine cycle parameters.
Support cooldown
Standard dual-fan cooling supports the cooldown stage after sterilization.

Which model fits your usual load?
The right choice depends on more than chamber volume. Vessel dimensions, batch size, basket configuration, available floor space and electrical service can all affect model selection.
- What you sterilize
- Largest vessel dimensions
- Typical batch size
- Available floor space
- Electrical connection
- Basket configuration
Compact capacity for routine lab use
“TOMY autoclaves are quiet, compact and offer impressive capacity for their size. Features such as the foot pedal and programmable cycles make daily use easy.”
Safety Manager · Assured BioSciences
Common setup questions
Do the SX-500U and SX-700U require fixed plumbing?
No. Both models use a built-in water reservoir and connect to an approved drain container. A dedicated water connection or central steam line is not required.
Can they sterilize liquids?
Yes. Both models support liquid sterilization cycles for compatible culture media and aqueous solutions. Validate cycle parameters for the specific load and application.
What is the main difference between the models?
The SX-500U provides a 50 L chamber and uses AC 100–120 V power. The SX-700U provides a 69 L chamber and requires AC 207–253 V power. Their chamber dimensions and footprints also differ.
How do I know whether my vessels will fit?
Compare the vessel dimensions and intended basket configuration with the chamber dimensions. Send unusual or tall vessel dimensions and your typical batch to the TOMY team for review.
Find the right autoclave for your lab
Tell us what you sterilize, the size of your largest vessel, your typical batch and your available space. The TOMY team can help review whether the SX-500U or SX-700U appears to fit your application.
- Compare chamber and basket fit
- Review electrical and installation requirements
- Discuss purchasing and accessory options
Which autoclave fits your lab?
Complete the form and our team will follow up about model fit, installation requirements and purchasing options.
Prefer email or having trouble with the form?
Contact tomy@amuzainc.com.