The Yamato SN-300C is a 32 L top-loading steam sterilizer/autoclave in Yamato's non-drying SN/SQ series — a microcomputer PID-controlled benchtop autoclave built for general laboratory sterilization of instruments, liquids, and culture media. The SN-300C is the 100-120V configuration of the SN300 model; its sister SN-310C is the 200-240V build. As a mid-capacity unit it sits between the 20 L SN200 class and the 47 L SN500 class, giving labs a practical 32 L chamber without stepping up to floor-standing capacity.
This is a non-drying autoclave (marketed "without dryer") — it runs saturated-steam sterilization and post-cycle cooling but does not include a forced-air drying stage. For labs that do not require dry wrapped loads, this keeps cost and footprint down.
Key Specifications
| Specification | Value |
| Model | SN300 (SN-300C catalog SKU) |
| Effective chamber capacity | 32 L |
| Effective chamber dimensions | 300 mm dia. × 445 mm depth |
| External dimensions (W×D×H) | 460 × 590 × 848 mm |
| Temperature range — sterilization | 105-135°C |
| Temperature range — melting (agar) | 65-100°C |
| Temperature range — heat retention | 45-60°C |
| Temperature range — preheating | 45-80°C |
| Max operating pressure | 0.255 MPa |
| Operating ambient | 5-35°C |
| Heater | 100V 800W × 2 |
| Electrical | 100-120V AC, 50/60Hz, 16.5-20A |
| Timer | 0/1 min to 99 h 59 min, 1-minute resolution |
| Weight | Approx. 75 kg |
| Accessories | Rack × 2, OMS-70 pail (dia 262 × depth 204 mm), steam cup, drain bottle, drain tray, filter |
Cycle Types / Operation Courses
The SN300 offers six microcomputer-selectable operation courses (per the series spec table): instrument sterilization, liquid sterilization, sterilization with keep-warm hold, agar-melt with keep-warm hold, agar-melt with heat retention, and manual operation. Temperature is set digitally via UP/DOWN keys with a digital display, under microcomputer PID control.
Application Profile
- Instrument and glassware sterilization at 105-135°C for general microbiology, cell culture, and clinical lab workflows.
- Liquid and media sterilization — dedicated liquid course for reagents and broths, with the agar-melt (65-100°C) and heat-retention (45-60°C) courses supporting media-prep workflows that melt agar and hold it pourable.
- Mid-throughput labs where a 20 L chamber is too small but floor-standing capacity is unnecessary — the 32 L chamber accepts two supplied racks.
Design Architecture
The SN300 uses a manual up/down lid mechanism with an attached safety interlock, and a small-size pressure vessel design (no installation notification required in the origin jurisdiction). Temperature is governed by microcomputer PID control with digital UP/DOWN setpoint entry.
A comprehensive safety-device suite is standard: sensor-failure detection, SSR short-circuit detection, disconnected-heater detection, water-level detection (liquid-expansion method), drain-bottle configuration-error warning, lid-lock error detection, memory-error detection, and a 0.255 MPa pressure safety valve. An exhaust valve provides both full-open and slow-exhaust modes, and an axial fan motor drives forced cooling. Option ports accept a sample sensor (1/4), recorder (1/4), and pressure-indicator connection. A 3 m power cord exits the unit.
Frequently Asked Questions
What is the chamber capacity of the SN-300C? The SN-300C has a 32 L effective chamber measuring 300 mm dia. × 445 mm depth — mid-capacity, between the 20 L SN200 class and the 47 L SN500 class.
Does the SN-300C include a drying stage? No. The SN-300C is a non-drying autoclave ("without dryer") — it runs saturated-steam sterilization and post-cycle cooling but does not include a forced-air drying stage, keeping cost and footprint down for labs that don't need dry wrapped loads.
What voltage is the SN-300C? 100-120V AC, 50/60Hz (16.5-20A). The 200-240V sister configuration is the SN-310C.
What sterilization temperature range does the SN-300C offer? 105-135°C for sterilization, plus dedicated melting (agar) at 65-100°C, heat-retention at 45-60°C, and preheating at 45-80°C, selectable across six microcomputer-controlled operation courses under PID control.
What's included with the SN-300C? Two racks, an OMS-70 pail (dia 262 × depth 204 mm), a steam cup, drain bottle, drain tray, filter, and instruction manual. An optional sample-temperature sensor is available.
Ordering & Configuration
Each SN-300C ships with 2 racks, an OMS-70 pail (dia 262 × depth 204 mm), a steam cup, drain bottle, drain tray, filter, and instruction manual. Optional sample-temperature sensing is available.
As a capital instrument, the SN-300C is quote-based. Contact Legacy Lab Supply for a formal quote. Confirm at quote: voltage/plug configuration (this is the 100-120V build — the 200-240V sister is SN-310C), intended load profile (instruments vs. liquids vs. media), rack/basket needs, whether the optional sample sensor is required, facility bench space and clearances, and lead time.
Request a quote to configure the SN-300C for your lab.
