Method: fluorine reagent spectrophotometry

Measuring range: 0.0-15mg/L, 0.5-50mg/L

Accuracy: ≤±10% when ≥0.2 mg/L;  ≤ ±0.02 mg/L when <0.2 mg/L

Repeatability: ≤±5%;

Stability: ≤±10% within 24h;

Measurement period: The minimum measurement period is 30 minutes,

The color rendering time can be modified arbitrarily within 5～120min

Sampling period: time interval (10～9999min arbitrarily adjustable) and whole point measurement mode;

Calibration cycle: adjustable at any interval from 1 to 99 days;

Output: 4~20mA (2 channels) RS232, RS485;

Environmental requirements: Indoors with adjustable temperature, recommended temperature +5～28℃; humidity ≤90% (no condensation);

Power supply: AC220±10% V, 50±10% Hz, 5A;

Dimensions: 1570×500×450 (mm)

The fluoride ion in the water sample reacts with the fluorine reagent and lanthanum nitrate in the acetate buffer solution to form a colored complex. The analyzer detects the color change and converts the change into the fluoride ion value to output. The amount of colored complex produced corresponds to the amount of fluoride ion.

1. Sampling inspection of large watershed environment.

2. Practical use by laboratory researchers.

3. Monitoring of fishery breeding and breeding environment.

4. Monitoring of sewage outlets of sewage plants.

5. Rivers, lakes, streams, etc.