Sulphur Dioxide 50/b, 400 - 8,000 PPM / 50 - 500 PPM, Part # 8101531, 10 Tests

Application Range

Standard Measuring Range: 400 to 8,000 / 50 to 500 ppm

Number of Strokes n: 1 / 10

Time for Measurement: approx. 15 s / approx. 3 min

Standard Deviation: ± 10 to 15 %

Color Change: blue š yellow

Ambient Operating Conditions

Temperature: 0 to 50 °C

Absolute Humidity: 1 to 15 mg H2O / L

Reaction Principle

SO2 + IO3 – š H2SO4 + I–

Cross Sensitivity

Hydrochloric acid is indicated in high concentrations. 10,000 ppm Hydrochloric acid corresponds to an indication of 150 ppm sulfur dioxide. No interference by: 500 ppm nitrogen monoxide 100 ppm nitrogen dioxide