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Electrochemical (EC) detectors detect chemicals in the gas phase by measuring changes in current across a target-specific electrode. When a target gas contacts the electrode an electrochemical reaction takes place, producing a change in current. A variety of EC sensors and detectors are available for identifying gases such as HS2, CO2, TIC/TIMs, explosives, and other chemicals of interest.

Most EC-based detectors can be configured with sensors for specific targets. Most units can detect one to five gases simultaneously. The most promising electrochemical systems use broad-response sensors capable of detecting multiple gases simultaneously.

Airsense Analytics (2)
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Smiths Detection, Inc. (1)
Handheld (4)
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Unit Cost
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$20,000 - $50,000 (1)
$50,000 - $100,000 (1)
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Sample Introduction
Vapor/Gas (4)
Sensitivity / Detection Limit
ppm (4)

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9 (4)


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Alkaline Battery (2)
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Training Required

<1 day (2)

ITAR/EAR Regulated

Yes (1)

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Continuous (<30 seconds) (2)
<1 minute (2)


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>5 years (4)

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Environics Oy

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GDA series

GDA series

Airsense Analytics

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Airsense Analytics

The standard GDA commonly used to detect and identify hazardous gaseous compounds has been improve...

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Smiths Detection, Inc.

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