Draeger 8101681 Hydrochloric Acid/Nitric Acid 1/a Detector Tubes (10 tests per box)

Application Range:

• Substance: Hydrochloric acid: nitric acid:
• Standard Measuring Range: 1 to 10 ppm / 1 to 15 ppm
• Number of Strokes n: 10 / 20
• Time for Measurement: Approx. 1.5 min / 3 min
• Standard Deviation: ± 30 %
• Color Change: Blue → Yellow

Ambient Operating Conditions:

• Temperature: 5 to 40 °C for HCI
  • For HNO3 measurements, the tube scales are applicable only to 20 °C.
  • Where the temperature is different, the measuring result must be multiplied as follows:
    • Temperature °C / Factor
      • 40  / 0.3
      • 30 / 0.4
      • 10 / 2
• Absolute Humidity: max. 15 mg H2O / L

Reaction Principle:

• HCl and/or HNO3 + pH indicator → yellow reaction product

Cross Sensitivity:

• 50 ppm nitrogen dioxide result in almost the same reading as 2 ppm nitric acid.
• 10 ppm hydrogen sulfide or 5 ppm nitrogen dioxide do not effect the reading.
• Chlorine concentrations in excess of 1 ppm change the entire indicating layer to a yellow-green.