These Ethylene tubes work with the Air Sampling Pump for checking levels during ripening.
- Ranges: 20 to 1,200 ppm
- Sampling Time: 3 minutes (1 pump stroke)
- Detection Limit: 10 ppm
- Operating Temperature: 32°F to 104°F (0°C to 40°C)
- Color Change: Yellow to Blue
- Pack of 10 tubes
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Seemed to work well. No reading but that could be there was no gas present. Going to try a lower range tube on the next order.