Hydrochloric Acid 50/a, 500 - 5,000 PPM / 50 - 500 PPM, Part # 6728181, 10 Tests 

Application Range

Standard Measuring Range: 500 to 5,000 / 50 to 500 ppm

Number of Strokes n: 1 / 10

Time for Measurement: approx. 30 s / approx. 5 min

Standard Deviation: ± 10 to 15 %

Color Change: blue š white yellow

Ambient Operating Conditions

Temperature: 10 to 50 °C

Absolute Humidity: max. 15 mg H2O / L

Reaction Principle

HCI + bromophenol blue š white yellow reaction product

Cross Sensitivity

Hydrogen sulfide and sulfur dioxide do not interfere in the TLV range. It is impossible to measure hydrochloric acid in the presence of other mineral acids. Chlorine and nitrogen dioxide are indicated, but with different sensitivities.