Tube Sulfur Dioxide 50/b (10) | Draeger

Overview

Tube Sulfur Dioxide 50/b (10) is a portable, single‑use colorimetric detector tube intended for rapid field measurement of sulfur dioxide (SO₂) in air. Each tube contains a specialized reagent that produces a visible colour change proportional to the amount of SO₂ sampled. Tubes are typically used with a manual hand pump (Dräger or compatible) and are sold in packs of ten for industrial hygiene surveys, leak checks, emergency response and spot‑checking ventilation or emission points.

Key features

• Pack size: 10 tubes per pack

• Detection principle: colorimetric reagent — visible stain length

• Portable, battery‑free, single‑use — suitable for rapid spot checks

• Designed for use with Dräger hand pumps or compatible manual pumps

• Individually sealed tubes for extended shelf life and reliability

• Quick visual readout using the printed concentration scale on the tube

Typical (representative) specifications

• Measurement range: commonly covers low ppb to several ppm depending on tube variant (confirm exact range for 50/b)

• Useful lower detection limit: often in the low ppb to 0.01–0.1 ppm range for sensitive tubes (manufacturer will specify)

• Accuracy / precision: generally semi‑quantitative — commonly ±15–30% under recommended sampling conditions

• Sampling: used with a specified number of pump strokes (e.g., 1–10 strokes for many Dräger tubes — check the tube label)

• Operating temperature: typical field range (e.g., 0–40 °C) — verify manufacturer recommended range

• Shelf life: commonly 12–36 months when sealed and stored per manufacturer instructions

Typical uses

• Rapid leak detection and area screening for SO₂ in chemical plants, power plants, refineries, and pulp/paper operations

• Short‑term industrial hygiene surveys and spot checks near combustion sources or flue gas streams

• Emergency response and HAZMAT initial assessment for suspected SO₂ release

• Verification of local exhaust / ventilation performance

How to use (summary)

1. Remove a sealed tube from the pack.

2. Break off the tube ends according to Dräger instructions (or insert into the pump fitting).

3. Draw the manufacturer‑specified number of pump strokes (or sample for the recommended diffusion time).

4. Observe the stained reagent column and read concentration directly from the printed scale on the tube.

5. Record the result and dispose of the used tube in accordance with local regulations.

Always follow the tube label and Dräger user instructions for exact stroke counts, sampling volumes and reading method.

Safety & precautions

• Sulfur dioxide is a corrosive respiratory irritant. These tubes are for detection only — do not rely solely on tubes for occupational safety decisions in high‑risk situations.

• Use appropriate PPE (respiratory protection, eye protection, gloves, protective clothing) based on the hazard assessment. Consider SCBA for unknown or high concentrations.

• Handle tubes carefully to avoid breakage and exposure to tube reagents. Do not open or tamper with tubes.

• Used tubes should be disposed of per local hazardous‑waste rules. Consult the tube SDS for reagent hazard info and first‑aid measures.

Limitations

• Colorimetric tubes give semi‑quantitative results and can be affected by temperature, humidity, sampling technique and interfering gases (e.g., certain oxidants or reducing gases).

• Not a substitute for continuous fixed‑site monitors where alarmed real‑time data are required.

• For regulatory compliance or precise exposure assessments, confirm with calibrated instrumental methods (e.g., electrochemical, UV fluorescence, GC) as appropriate.

Packaging & documentation

• Typical pack: 10 tubes, individually sealed (foil/ blister).

• A genuine Dräger pack should include: lot number, production/expiry date, instructions for use, and Safety Data Sheet (SDS). Verify package markings and datasheet for tube‑specific details before use.