The Yamato IN-604WMK-220V is the shaking-incubator build of the IN604 — the same 143 L programmable refrigerated chamber holding −5 °C to +50 °C at ±0.3 °C (refrigerator continuous), delivered with an observation window and a factory-installed MK-161 orbital shaker inside the chamber. It gives suspension and aerated cultures controlled temperature and agitation in a single sub-ambient-capable instrument. This is the 220V variant; the 115V sibling is the IN-604WMK-115V.
Key Specifications
| Model / capacity | Yamato IN604 (WMK config) — 143 L |
| Configuration | Observation window + factory-installed MK-161 orbital shaker |
| 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) |
| 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, 250 W |
| Cooling medium | R134a, 310 ±5 g |
| Heater | Iron-chrome, 550 W |
| Sensor | Platinum resistance bulb (Pt100Ω) |
| Interior / insulation | Stainless steel; expanded polystyrene (non-fluorocarbon) |
| Defrost | Manual ON / automatic OFF, cycle operation |
| In-chamber shaker | MK-161 orbital shaker (specs not in this incubator manual — confirm at quote) |
| Cable port | Inner diameter 30 mm (right side) |
| Internal dimensions | 600 × 477 × 500 mm (W×D×H) |
| External dimensions | 710 × 645 × 913 mm (W×D×H) |
| Weight | Approx. 93 kg (base chamber; excl. shaker) |
| Power supply | 220V, 50/60 Hz (base spec sheet rated AC100V; 220V per manifest) |
Application Profile
Shaken culture at controlled temperature is the core use case here: aerobic microbial growth, protein expression, cell suspension, and dissolution or extraction studies all need agitation plus a stable, often sub-ambient, temperature. The IN-604WMK integrates both — the IN604 refrigerated chamber holds −5 °C to +50 °C at ±0.3 °C while the built-in MK-161 orbital shaker agitates flasks or vessels on its platform — avoiding the footprint and thermal compromise of a standalone shaker inside a separate incubated enclosure.
Base chamber behavior is identical to the standard IN-604: ±1.0 °C distribution at 37 °C (refrigerator continuous), PID 32-step programming, and a SUS304 interior (avoid strong acids and halide-releasing samples). Because a shaker occupies the chamber, plan flask layout and balance on the shaker platform per the shaker's own instructions, and keep the load spaced so forced-circulation uniformity is preserved.
Compatibility & Configuration
This SKU is the WMK build: the observation window plus the MK-161 orbital shaker installed in the chamber. Neither the window nor the MK-161 shaker is documented in the IN604/804 incubator instruction manual, so shaker parameters — shaking speed, orbit diameter, platform size, and flask capacity — are not stated here and must be confirmed at quote from the MK-161 documentation. Compared with the IN-604W, which provides only a shaker power hook-up, the WMK arrives with the shaker fitted.
Frequently Asked Questions
What does "WMK" mean on this SKU? It is the IN604 with an observation window and a factory-installed MK-161 orbital shaker — a combined shaking refrigerated incubator.
What are the MK-161 shaker's speed, orbit, and capacity? Those parameters are not documented in the incubator manual supplied, so they are not stated on this page; they are confirmed at quote against MK-161 documentation. We do not infer shaker specs.
How is this different from the IN-604W? The IN-604W provides an internal power hook-up for a shaker; the IN-604WMK ships with the MK-161 shaker installed.
Are the incubator chamber specs the same as the standard IN-604? Yes — 143 L, −5 °C to +50 °C, ±0.3 °C accuracy, R134a/250 W refrigeration, and a 550 W heater, identical to the standard IN-604.
Ordering & Configuration
Add to quote or cart for a formal quotation. At quote we confirm supply voltage (this is the 220V SKU; order IN-604WMK-115V for 115 V), the MK-161 shaker parameters and platform/flask configuration, and lead time.
At ~93 kg (chamber) and 710 × 645 × 913 mm, plan a stable, ventilated, vibration-tolerant location with condenser clearance. Warranty: per Yamato standard capital-equipment terms — confirmed at quote.
Yamato IN604 refrigerated incubator, 143 L — shaking options:
- IN-604WMK-220V (this product) — window + MK-161 shaker installed, 220V
- IN-604WMK-115V — same build, 115V
- IN-604W — window + shaker power hook-up (shaker not included)
- IN-604 (base) — no window/shaker
