Here are the technical specifications for the Eppendorf New Brunswick S41i CO₂ Incubator Shaker, a combined CO₂ incubator with integrated shaker — commonly used for mammalian cell culture and suspension applications:

🔧 Environmental & Growth Control

• Temperature range: Ambient + ≈4 °C up to 50 °C (operates at least ~4 °C above room)

• Temperature control accuracy: ± 0.1 °C

• Temperature stability at 37 °C: ± 0.1 °C

• Temperature uniformity (liquid in flasks): ± 0.25 °C at 37 °C

• Relative humidity: ~90 % ± 5 % at 37 °C (water tray based)

• CO₂ range: 0.2 – 20 %

• CO₂ control accuracy: ± 0.1 %

• CO₂ stability at 5 %: ± 0.2 %

• CO₂ uniformity: ± 0.1 %

🔄 Shaking / Agitation

• Shaking speed range: 25 – 400 rpm (when units are stacked: 25 – 250 rpm top, 25 – 400 rpm bottom)

• Orbit diameter: 2.5 cm (≈1 in)

• Speed control accuracy: ± 1 % full-scale

• Load capacity: ~11 kg platform max

• Drive: Triple-eccentric counterbalanced mechanism (stable & low vibration)

📦 Capacity & Dimensions

• Usable chamber volume: ~170 L

• Platform size: ~612 × 356 mm (24 × 14 in)

• External footprint: ~875 × 730 × 850 mm (W × D × H)

• Net weight: ~152–154 kg (≈335–340 lb)

🧰 General Features

• Contamination control: Integrated high-temperature disinfection (≈120 °C for ~4 h)

• Humidity management: Water trays supplied, seamless chamber for easy cleaning

• Display / Control: Touchscreen controller with alarms and data logging standard

• Ports & interfaces: USB, optional Ethernet (often service use/VisioNize connectivity)

• Standards & compliance: CE, UKCA, UL, cUL certified in many regions

🧪 Typical Applications

Suited for suspension mammalian cell expansion (e.g., CHO, HEK cells), protein expression, viral vector pre-processing, hybridoma culture, and processes where consistent CO₂ and agitation are essential.