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350| Measurement of Contaminants in Liquids<br />
Trichloroethylene 0.2 to 3 mg/L<br />
Order No. 67 28 541<br />
Application Range<br />
Determination of trirchloroethylene in water/waste water<br />
Dräger-Tube: Trichloroethylene 2/a<br />
Measuring range:<br />
Number of Strokes (n): 8 / 4<br />
Typical Stroke Time:<br />
Measurement Time:<br />
Sample Volume:<br />
Color Change:<br />
0.2 to 1 mg/L / 0.3 to 3 mg/L<br />
40 to 80 s<br />
approx. 480 s / approx. 240 s<br />
200 mL<br />
pale grey ä orange<br />
Temperature Range: 4 to 30 °C<br />
pH-Measurement:<br />
not necessary<br />
System Parameters<br />
Number<br />
of Stokes<br />
Measurement<br />
Range<br />
[mg/L]<br />
Standard<br />
Deviation<br />
[%]<br />
Temperature<br />
[°C]<br />
Parameters<br />
B C<br />
n=8 0.2 to 1 25 4 to 10 0.028 3<br />
11 to 19 0.025 3<br />
20 to 30 0.021 3<br />
n=4 0.3 to 3 25 4 to 18 0.049 1<br />
19 to 30 0.044 1<br />
Evaluation of Measurement<br />
Calculate trichloroethylene concentration:<br />
Y [mg/L] = A • B • (X [ppm] + C)<br />
Cross Sensitivity<br />
Dichloromethane, n-hexane, perchloroethylene and chloroform<br />
are indicated with lower sensitivity.<br />
ST-157-2001
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