Basic HTML Version
ECD - SRI Instruments
ECD - Electron Capture Detector
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Thermostatted from ambient to 375
°
C
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Offers extreme sensitivity
down to 10 ppt
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Detects electronegative compounds
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Mandated for pesticides and PCBs
The SRI Electron Capture Detector can be operated with either nitrogen or argon-5% methane (P5)
makeup gas, and nitrogen, P5, or helium carrier (as long as the helium flow is less than 10 milliliters
per minute). The ECD may be thermostatted from ambient to 375°C.
The ECD detects electronegative compounds, especially chlorinated, fluorinated or brominated
molecules such as carbon tetrachloride, bromoform, PCBs and pesticides such as DDT. The ECD
offers extreme sensitivity (parts per trillion for SF
6
).
This chromatogram shows the ECD
response to a 200ppb pesticide
sample.