ST CO2 Incubator

Item #: H3550 Series
Manufacturer: Benchmark Scientific

Product Description

With our unique and proprietary heat distribution technology, the Benchmark ST Series of CO2 incubators provide the highest levels of temperature accuracy with minimal fluctuation (within 0.1°C). The six-side heating system, in combination with a low speed internal fan, uniformly spreads air throughout the chamber (without air exchange from the external environment). The chamber walls are constructed of high grade (316) stainless-steel, and all corners are rounded, preventing the accumlation of dirt/debris.

For added security, all models feature an internal alarm to alert the user if the CO2 percentage changes, or the temperature fluctuates by more than 1°C from the set point. In addition, a “quick-cal” calibration button allows for quickly adjusting the chamber temperature to match that of a properly calibrated external thermometer.

Two series (standard and PLUS) are each available in 45L and 180L chamber sizes. PLUS models include advanced programming for high heat decontamination (at 125°C), a unique split inner glass door for access to the chamber without exposing it fully to the external environment and programmable humidity percentage, up to 95%.


  • Precision temperature control, 6-sided heating
  • Precise monitoring over CO2 with dual beam IR sensor
  • Seamless, stainless-steel chamber
  • Digital control of humidity percentage (PLUS models only)


Temperature Range:

Ambient +5° to 60°C
Temperature Increments:


Temperature Uniformity:

± 0.4°C*

Temperature Stability:


Temperature Accuracy:

CO2 Range:
0 to 20%
CO2 Increment:
CO2 Accuracy:
± 0.1%
CO2 Sensor:
Dual Beam IR
Chamber Dimensions:
13.2 x 14.2 x 15.4 in. / 33.5 x 36.1 x 39.2 cm
Chamber Dimensions: (180L)
18.7 x 20.8 x 28 in. / 47.3 x 52.8 x 71 cm
Chamber Volume:
45L / 180L
Chamber Material:
Stainless Steel (316)
Exterior Dimensions (45L):
16.5 x 18.3 x 21.8 in. / 42 x 46.5 x 55.3 cm
Exterior Dimensions (180L):
22 x 26.2 x 37.2 in / 56 x 66.5 x 94.5 cm
Weight (45L):
77 lbs / 35 kg
Weight (180L):
172 lbs / 78 kg
120V or 230V, 50-60Hz (350W)
Humidity Control:
Up to 95%
Split Inner Door Compartments:
45L: 2 / 180L: 6
2 Years