Dual Gas Analyzers

Dual Gas Analyzers

The dual gas analyzers offered by Storage Control Systems, Inc. feature state-of-the-art technology that make these units perfect for low oxygen produce storage and for respiration studies.

Featuring electrochemical oxygen sensors, the zero-calibration is extremely stable and the reading-in air is adjustable with the simple front panel span control. The carbon dioxide is measured using a miniature infrared sensor that is highly stable and requires no routine calibration.

Updated Technology

These updated versions of our past dual gas analyzers use a single LCD display rather than separate O2 and CO2 LCDs. This allows a smaller unit, especially with the GCS250 handheld dual gas analyzer. The backlit display makes reading levels in low-light situations easy and clear.

Every dual gas analyzer is equipped with a hydrophobic filter that will prevent water from being pushed through the analyzer. If the filter becomes blocked, the high-flow diaphragm pump will not start and will shut the unit down to prevent any damage to the sensors.

We offer several different models to best suit your application and needs, including the GCS250 and the GCS350.


The GCS250 is the the most popular portable dual gas analyzer in the world. Long battery life, stability, accuracy and 0-10VDC and 4-20mA outputs make this instrument perfect for fruit storage.


The GCS350 is a dual gas analyzer that is mounted in a rugged and waterproof case for increased portability and durability, particularly in outdoor applications.


  •  Combines dual gas analyzing in one unit
  •  0-25% Oxygen
  •  0-20% Carbon Dioxide
  •  Resolution: 0.1%
  •  Repeatability: 0.1%
  •  Response Time: 99% 30 seconds
  •  GCS250, 350, and 260 feature 4-20mA or 0-10VDC outputs
  •  Built-in electric pumps
  •  250 battery life: 8 hours
  •  Sample flow: 2 scfh