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.
