The Yamato SM-201 is an automatic high-pressure steam sterilizer with a drying stage (SM200 class), delivering a microprocessor-controlled STERILIZE or STERILIZE & DRY cycle in a 22 L (0.8 cu ft) chamber. Sterilization runs 105–123 °C at up to 0.18 MPa (26.1 psi), followed by a hot-air dry to 150–180 °C, so loads come out sterile and dry from a single benchtop unit. This is the 115V model; the 220V sibling is the SM-211.
Key Specifications
| SKU | SM-201 |
| Base model | Yamato SM200 |
| System | Automatic high-pressure steam sterilizer with dryer |
| Sterilization temperature range | 105–123 °C |
| Drying temperature range | 150–180 °C |
| Max. operating pressure | 0.18 MPa (26.1 psi) |
| Controller | Hi Tec IV CR microprocessor type |
| Sensor 1 (chamber temp.) | Pt100Ω resistance thermometer |
| Sensor 2 (water temp.) | Type-T thermocouple |
| Timer | 1 min – 99 h 59 min / 100–999 h |
| Heater 1 (sterilize) | 1.3 kW |
| Heater 2 (dry) | 1.0 kW |
| Chamber (dia. × depth) | 24 cm × 44.5 cm |
| Chamber capacity | 22 L (0.8 cu ft) |
| External dimensions (W×D×H) | 41 × 47 × 95.3 cm |
| Weight | 65 kg (143.3 lb) |
| Water requirement | 1900–2000 mL (distilled water) |
| Safety | Main short-circuit protection, safety-valve overpressure relief, self-diagnostic sensor monitoring, low-water sensor, SSR/heater protection |
| Power supply | AC115V, 13 A (50/60 Hz) |
Application Profile
Steam sterilization works because saturated steam under pressure transfers heat far more effectively than dry air, denaturing proteins and killing spores at achievable temperatures. The SM-201 automates that cycle: it purges air, pressurizes to the setpoint, holds the sterilization time, then cools — with an optional drying stage that removes residual moisture so wrapped goods, media bottles, and instruments are ready to use.
The 22 L top-loading chamber suits routine benchtop loads — media, glassware, waste bags, and instruments — in teaching labs, clinics, and research groups. Always run with the basket in place, use distilled water (1900–2000 mL) to avoid scale and corrosion, and verify results with a chemical indicator, since outcome varies with load type and packing. The self-diagnostic controller and low-water sensor guard against dry-firing, and the safety valve relieves overpressure. Never process flammable or explosive materials.
Frequently Asked Questions
What temperature and pressure does it reach? Sterilization runs 105–123 °C at up to 0.18 MPa (26.1 psi); the optional drying stage reaches 150–180 °C.
How large is the chamber? 22 L (0.8 cu ft) — 24 cm diameter × 44.5 cm deep, top-loading.
Does it dry loads? Yes. A STERILIZE & DRY cycle uses a separate 1.0 kW dryer heater to remove residual moisture after sterilization.
What water should I use, and how much? Distilled water, 1900–2000 mL, to prevent mineral deposits and corrosion. A low-water sensor stops operation if the level is too low.
Do I need a basket? Yes — the manual states the unit must never be operated without the basket.
Which voltage is this? This is the 115V model (AC115V, 13 A); order SM-211 for 220V supply.
Ordering & Configuration
Confirm at quote: supply voltage, chamber size versus your typical load, and siting (ventilation and clearance for the lid and steam exhaust).
Warranty: Per Yamato standard capital-equipment terms — confirm coverage at quote.
Add to a quote to lock voltage and lead time; the SM-201 ships with a water bottle, two baskets, a bottom plate, a steam receiver (saucer), the manual, and the warranty card.
Yamato SM sterilizer family:
- SM-201 (this product) — 22 L, 105–123 °C, 115V
- SM-211 — 22 L class, 220V
- SM-301 / SM-311 — 36 L class (115V / 220V), 105–128 °C
- SM-501 / SM-511 — 51 L class (115V / 220V), 105–128 °C
Choose the SM-201 for compact benchtop sterilize-and-dry on 115V; step up in chamber size as batch volume grows.
