The Yamato IN-804W-115V is the window configuration of the IN804 programmable refrigerated incubator — the same 286 L stainless chamber holding −5 °C to +50 °C at ±0.3 °C (refrigerator continuous), fitted with an observation window so the load can be checked without breaking the setpoint by opening the door. It suits high-throughput sub-ambient culture, BOD testing, and long-run stability studies where frequent visual inspection matters. This is the 115V variant; the 220V sibling is the IN-804W-220V.
Key Specifications
| Model / capacity | Yamato IN804 (W config) — 286 L |
| Configuration | Observation window |
| Circulation method | Forced circulation (axial fan) |
| Temperature control range | −5 °C to +50 °C |
| Adjustment accuracy | ±0.3 °C (refrigerator continuous); ±1.0 °C (cycle operation) |
| Distribution accuracy | ±1.0 °C (at 37 °C, refrigerator continuous) |
| Time to highest temp | 20 → 50 °C in approx. 55 min |
| Time to lowest temp | 20 → −10 °C in approx. 90 min |
| Control system | PID by microcomputer; programmable, 32 steps |
| Setting / display | Digital up/down keys; orange LED display |
| Operation modes | Fixed temp, auto-start, auto-stop, program (32 steps, repeat) |
| Refrigerator | Air-cooled full-closed reciprocating compressor, 300 W |
| Cooling medium | R404A, 260 ±5 g |
| Heater | Iron-chrome, 750 W |
| Sensor | Platinum resistance bulb (Pt100Ω) |
| Interior / insulation | Stainless steel; expanded polystyrene (non-fluorocarbon) |
| Inner door | Tempered glass, 5 mm thick (divided upper and lower) |
| Defrost | Manual ON / automatic OFF, cycle operation |
| Shelves | 5 stainless punching-metal shelves; 15 kg/shelf; 23 bracket steps at 30 mm |
| Cable port | Inner diameter 30 mm (right side) |
| Internal dimensions | 600 × 477 × 1000 mm (W×D×H) |
| External dimensions | 710 × 645 × 1630 mm (W×D×H) |
| Weight | Approx. 120 kg (base chamber) |
| Power supply | 115V, 50/60 Hz (base spec sheet: AC100V, 14 A, 15 A breaker) |
Application Profile
A refrigerated incubator holds setpoints at or below ambient without drifting upward as the room warms — the requirement behind BOD testing, culture near ambient, and low-temperature stability work. At 286 L, the IN-804 chamber serves labs running many plates or vessels in parallel, and the observation window lets staff verify colony growth, plate condition, or sample state without opening the door — each door opening perturbs a sub-ambient chamber and lengthens recovery, so a window preserves both uniformity and time-to-result.
The base chamber specifications are unchanged from the standard IN-804: ±0.3 °C adjustment accuracy and ±1.0 °C distribution at 37 °C with the refrigerator running continuously, PID 32-step programming, a divided upper/lower tempered-glass inner door, and a SUS304 interior (avoid strong acids and halide-releasing samples). Load with the shelves and space samples so forced-circulation uniformity is preserved.
Compatibility & Configuration
The W designation adds an observation window for viewing the load without opening the door. Per the manifest, the IN-804W is the window configuration (unlike the IN-604W, which also carries a shaker power hook-up). The window is a catalog configuration option and is not itemized in the IN604/804 instruction manual spec table; confirm the exact window construction and any glazing details at quote. Chamber capacity, refrigeration, and controls are otherwise identical to the standard IN-804.
Frequently Asked Questions
What does the "W" in IN-804W mean? It denotes the window configuration — an observation window that lets you inspect the load without opening the door and disturbing a sub-ambient setpoint.
Does the IN-804W include a shaker? Per the manifest, the IN-804W is specified as window only. If in-chamber shaking is required, raise it at quote — the smaller IN-604 line offers a documented shaker hook-up (IN-604W) and an MK-161 shaker build (IN-604WMK).
Are the chamber specs the same as the standard IN-804? Yes — the 286 L chamber, −5 °C to +50 °C range, ±0.3 °C accuracy, R404A/300 W refrigeration, and 750 W heater are identical to the standard IN-804.
How long does it take to reach temperature? Approximately 55 minutes from 20 °C to 50 °C, and about 90 minutes to pull down from 20 °C to −10 °C.
Ordering & Configuration
Add to quote or cart for a formal quotation. At quote we confirm supply voltage (this is the 115V SKU; order IN-804W-220V for 220 V), the window configuration and glazing details, and lead time.
At ~120 kg and 710 × 645 × 1630 mm, this is a floor-standing unit — plan a stable, ventilated location with condenser clearance and door swing. Warranty: per Yamato standard capital-equipment terms — confirmed at quote.
Yamato IN804 refrigerated incubator, 286 L:
- IN-804W-115V (this product) — window configuration, 115V
- IN-804W-220V — window configuration, 220V
- IN-804 (base) — no window
- Step down to the IN-604W (143 L) for a window + shaker hook-up build.
