Fluorine 0.1/a, 0.1 - 2 PPM, Part # 8101491, 10 Tests 

Application Range

Standard Measuring Range: 0.1 to 2 ppm

Number of Strokes n: 20

Time for Measurement: approx. 5 min

Standard Deviation: ± 15 to 20 %

Color Change: white š yellow

Ambient Operating Conditions

Temperature: 10 to 40 °C

Absolute Humidity: < 10 mg H2O / L

Reaction Principle

a) F2 + MgCI2 -> CI2 + Mg F2

b) Cl2 + o-tolidine š yellow reaction product

Cross Sensitivity

Nitrogen dioxide, chlorine and chlorine dioxide are indicated, but with different sensitivities. Extension of the Measuring Range Using n = 40, divide the reading by 2; the measuring range will be 0.05 to 1 ppm.