The Yamato SM-501 is the 115V variant of Yamato's largest benchtop-class automatic high-pressure steam sterilizer with a drying stage (SM510 class), running a microprocessor-controlled STERILIZE or STERILIZE & DRY cycle in a 51 L (1.8 cu ft) chamber. Sterilization runs 105–128 °C at up to 0.2 MPa (29.0 psi), followed by a hot-air dry to 150–180 °C. The 220V sibling is the SM-511.
Key Specifications
| SKU | SM-501 |
| Base model | Yamato SM510 (115V variant) |
| System | Automatic high-pressure steam sterilizer with dryer |
| Sterilization temperature range | 105–128 °C |
| Drying temperature range | 150–180 °C |
| Max. operating pressure | 0.2 MPa (29.0 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) | 2.0 kW (base SM510 rating; confirm at 115V) |
| Heater 2 (dry) | 1.5 kW (base SM510 rating; confirm at 115V) |
| Chamber (dia. × depth) | 30 cm × 66.5 cm |
| Chamber capacity | 51 L (1.8 cu ft) |
| External dimensions (W×D×H) | 44 × 53 × 108.5 cm |
| Weight | 85 kg (187.4 lb) |
| Water requirement | 2800–3000 mL (distilled water) |
| Safety | Main short-circuit protection, safety-valve overpressure relief, self-diagnostic sensor monitoring, low-water sensor, SSR/heater protection |
| Power supply | 115V (base SM510 itemized at AC220V 11A; confirm 115V draw at quote) |
Application Profile
Steam sterilization works because saturated steam under pressure transfers heat far more effectively than dry air, killing spores at practical temperatures. The SM-501 automates the full cycle — air purge, pressurization, timed hold at setpoint, then cooling — with an optional drying stage so even large loads come out sterile and dry.
The 51 L chamber is the deepest in the SM benchtop family (66.5 cm depth), suited to the highest-volume routine loads: tall media bottles, bulk glassware, and large instrument sets. Always run with the basket in place, fill with distilled water (2800–3000 mL) to prevent scale and corrosion, and verify each run with a chemical indicator. The self-diagnostic controller and low-water sensor prevent dry-firing; the safety valve relieves overpressure. Never process flammable or explosive materials.
Frequently Asked Questions
What temperature and pressure does it reach? Sterilization runs 105–128 °C at up to 0.2 MPa (29.0 psi); the drying stage reaches 150–180 °C.
How large is the chamber? 51 L (1.8 cu ft) — 30 cm diameter × 66.5 cm deep, the largest in the SM benchtop range.
Which voltage is this, and what should I confirm? This is the 115V variant. The SM200/300/310/510 manual itemizes the 51 L SM510 at AC220V; confirm the exact 115V current draw and heater ratings at quote. The 220V sibling is SM-511.
How much water does it need? 2800–3000 mL of distilled water; a low-water sensor stops operation if the level is too low.
Does it dry loads? Yes — a STERILIZE & DRY cycle uses a separate dryer heater to remove residual moisture.
Do I need a basket? Yes; the manual requires the basket for every run.
Ordering & Configuration
Confirm at quote: 115V supply and current draw, 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-501 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-501 (this product) — 51 L, 105–128 °C, 115V
- SM-511 — 51 L, 220V
- SM-201 / SM-211 — 22 L class (115V / 220V), 105–123 °C
- SM-301 / SM-311 — 36 L class (115V / 220V), 105–128 °C
Choose the SM-501 for the largest benchtop sterilize-and-dry chamber on 115V.
