Food Science Instruments


Store It! Gas Analyzer

The F-940 Store It! Gas Analyzer provides rapid and precise measurements of ethylene, CO2 and O2. The Store It! was designed for Quality Assurance staff to increase shelf-life and prevent spoilage by monitoring ripening gases throughout the storage process. 

The Store It! features an intuitive user interface, making it simple to operate right out of the box. Its lightweight, handheld design enables users to rely on the Store It! at all stages of storage along the supply chain. A built-in data logger stores thousands of data points and conveniently communicates data through USB or Bluetooth onto a PC or tablet for later analysis.


  • Measures C2H4, CO2 and O2
  • Displays results in under 30 seconds
  • Past records stored on the device
  • Handheld and lightweight
  • Internal data logging and storage
    (4GB SD card)
  • Bluetooth data transfer
  • Battery lasts for 8+ hours
  • Display easily viewed in dimly lit environments
  • PolarCept!TM water filter for removing
    non-ethylene hydrocarbons


Main Unit

Air Sampling Rate: 70mL/min

Data Saving: Automated, 1 second intervals

Display: Sunlight visible transflective LCD

Operating Environment: 0°C - 45°C; 0-90% humidity non-condensing

Dimensions: 18 cm x 13.5 cm x 5.5 cm

Weight: 0.95 kg

Enclosure: Powder coated aluminum

Power Source: Removable rechargeable lithium-ion battery

PC Interface: USB and Wi-Fi SD Card, Bluetooth

Data Recorded with Each Measurement: Ethylene, CO2 and O2 Concentrations, Date,
Time, RH, GPS Location

C2H4 Sensor

Sensor Type: Electrochemical

Range: 0-10 ppm

Resolution: 0.1 ppm

Accuracy: +/-2% relative +/-0.15 ppm absolute

Lower Detection Limit: 0.1 ppm

Offset Recalibration: Daily

Span Recalibration: 3 months+

Lifetime: 12 months

CO2 Sensor

Sensor Type: Infrared Sensor, Pyroelectric detector

Range: 0-100%

Resolution: 0.01%

Accuracy: +/- 3% relative +/-1% absolute

Sampling Time: 10 seconds

Calibration: Annually

Lifetime: >5 years

O2 Sensor

Sensor Type: Eletrochemical

Range: 0-100%

Resolution: 0.1%

Accuracy: +/-2% relative +/-0.25% absolute

Sampling Time: 10 seconds

Calibration: Bi-annually

Lifetime: 12 months

Typically < 5% per month


  • Controlled Atmosphere storage facility management
  • Ethylene mitigation verification
  • Packing house inspection
  • Precision citrus degreening
  • Storage assignment in distribution centers
  • Packaging quality assurance

Calibration Schedule

Sensor Set Zero Set Span

C2H4 ppm Daily 3 months+

CO2 PCT Weekly Annually

O2 Weekly 6 months

Typically < 5% per month