Tube - Aniline 0.5/a (10) | Draeger

• The Dräger Tube Aniline 0.5/a is a single-use glass detection tube designed for the rapid measurement of aniline vapours in air.

• The tubes are part of the broader Dräger Short-Term Tubes system ("laboratory behind glass") which allows spot measurements of many gases and vapours using a manual pump.

• The “(10)” indicates that the product comes in a package of 10 individual tubes.

Key Specifications

• Measuring range: 0.5 to 10 ppm (parts per million) of aniline vapour in air.

• Number of strokes (manual pump): 20 strokes are specified for the sample measurement.

• Measurement time: Approximately 4 minutes.

• Standard deviation (accuracy): ±15-20 % under specified conditions.

• Ambient operating conditions: Temperature range: 15-30 °C; absolute humidity: approx. 7-12 mg H₂O/L.

• Reaction principle: The tube’s reagent reacts with aniline (C₆H₅NH₂) oxidising chromium (VI) to chromium (III) among other oxidation products.

• Color indicator change: From pale yellow to pale green when aniline is present within the measuring range.

Applications & Use-Cases

• This tube is specifically for detecting aniline vapours in workplaces, confined spaces, or industrial settings where exposure to aniline may occur (e.g., chemical plants, dye manufacturing, rubber and adhesive industries).

• It is well-suited for spot measurements, peak exposure detection, and leak detection in systems where aniline is used or stored. The manufacturer notes such tubes can be used for measurement of concentration peaks, inhalation exposure, leakages in tanks/shafts, etc.

• It works with the manual bellows-type pump (e.g., the Dräger Accuro®) to draw a fixed 100 mL sample of air through the tube; the resultant colour change indicates concentration.

Benefits

• Fast and reliable: The Dräger tube system offers immediate visual indication of concentration (via colour change) without needing bulky instrumentation.

• Pre-calibrated and simple: No need for complex set-up; the tube and pump system are simple to deploy in the field.

• Broad compatibility: Works with standard Dräger pump systems and integrated into the Dräger Short-Term Tubes portfolio which covers 500+ gases/vapours.

• Portability: Because the tubes are compact glass vials, they are suitable for on-site measurements in confined spaces or remote locations.

Usage Considerations & Limitations

• Accuracy limits: The ±15-20 % standard deviation implies that while suitable for spot checks and safety monitoring, this should not replace high-precision laboratory analyses for critical compliance measurement.

• Cross-sensitivity issues: If methyl aniline and aniline are both present, the tube cannot distinguish only aniline concentration (i.e., the presence of methyl aniline interferes). Additionally, ethers, ketones, esters, aromatics and benzines may also be indicated but with different sensitivities.

• Ambient condition dependency: The performance is specified for 15-30 °C and certain humidity; outside those ranges the reading may deviate. Users should verify conditions or apply correction/appropriate technique.

• Single-use: Each tube is single use; once the colour change has occurred and the sample drawn, the tube must be discarded and replaced.

• Proper pump and sampling technique required: The correct number of strokes (20) must be applied, and the 100 mL sample volume must be correctly drawn for valid measurements. Failure to follow may affect accuracy.