The Yamato SN-500C is a 47 L top-loading steam sterilizer/autoclave in Yamato's non-drying SN/SQ series — the largest of the tall-chamber SN models, built for higher-throughput sterilization of instruments, liquids, and culture media. The SN-500C is the 100-120V configuration of the SN500 model; its sister SN-510C is the 200-240V build. Geometrically it shares the 300 mm chamber diameter of the 32 L SN300 but is substantially deeper (665 mm vs 445 mm), yielding 47 L in a taller cabinet.
This is a non-drying autoclave (marketed "without dryer") — saturated-steam sterilization and post-cycle cooling with no forced-air drying stage.
Key Specifications
| Specification | Value |
| Model | SN500 (SN-500C catalog SKU) |
| Effective chamber capacity | 47 L |
| Effective chamber dimensions | 300 mm dia. × 665 mm depth |
| External dimensions (W×D×H) | 460 × 590 × 1068 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 950W × 2 |
| Electrical | 100-120V AC, 50/60Hz, 19.5-23.5A |
| Timer | 0/1 min to 99 h 59 min, 1-minute resolution |
| Weight | Approx. 85 kg |
| Accessories | Rack × 3, OMS-70 pail (dia 262 × depth 204 mm), steam cup, drain bottle, drain tray, filter |
Cycle Types / Operation Courses
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. Setpoints are entered digitally via UP/DOWN keys under microcomputer PID control.
Application Profile
- Higher-throughput instrument and glassware sterilization at 105-135°C — the 47 L deep chamber accepts three supplied racks for larger batch loads.
- Liquid and media sterilization — dedicated liquid course plus agar-melt (65-100°C) and heat-retention (45-60°C) courses for media-prep workflows.
- Tall-item loads — the 665 mm chamber depth suits taller vessels and flasks that would not clear the shallower SN300 chamber.
Design Architecture
The SN500 uses a manual up/down lid mechanism with attached safety interlock and a small-size pressure vessel design. Temperature is governed by microcomputer PID control with digital UP/DOWN setpoint entry and digital display. Its defining geometry is the 665 mm deep chamber — same 300 mm bore as the SN300, but the extra depth drives capacity to 47 L and raises overall height to 1068 mm.
The standard safety-device suite covers 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 full-open and slow-exhaust modes; an axial fan motor drives forced cooling. Option ports accept a sample sensor (1/4), recorder (1/4), and pressure-indicator connection. At 19.5-23.5A on 100-120V, this variant draws the highest current in the SN 100V line — verify circuit capacity at installation.
Frequently Asked Questions
What is the chamber capacity of the SN-500C? 47 L, with an effective chamber of 300 mm diameter × 665 mm depth — the same 300 mm bore as the SN300 but substantially deeper, so it accepts taller vessels and flasks.
What temperatures can it run? 105-135°C for sterilization, plus agar-melting (65-100°C), heat retention (45-60°C), and preheating (45-80°C).
Does the SN-500C have a drying stage? No. It is a non-drying autoclave (marketed "without dryer") — saturated-steam sterilization with post-cycle cooling and no forced-air drying stage.
What operation courses does it offer? Six microcomputer-selectable courses: instrument sterilization, liquid sterilization, sterilization with keep-warm hold, agar-melt with keep-warm hold, agar-melt with heat retention, and manual operation.
What power does it require? 100-120V AC, 50/60Hz, drawing 19.5-23.5A — the highest current in the SN 100V line, so verify dedicated-circuit capacity. The 200-240V sister model is the SN-510C.
Ordering & Configuration
Each SN-500C ships with 3 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-500C is quote-based. Contact Legacy Lab Supply for a formal quote. Confirm at quote: voltage/plug configuration and dedicated-circuit capacity (this 100-120V build draws up to 23.5A — the 200-240V sister is SN-510C), intended load profile, rack/basket needs, optional sample sensor, facility bench space and overhead clearance for the 1068 mm cabinet, and lead time.
Request a quote to configure the SN-500C for your lab.
