Description
Key Specifications
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Measuring range: 10 to 250 ppm for styrene.
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Number of tubes per pack: 10 tubes/box.
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Standard deviation (accuracy): ±15 to ±20% typical.
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Reaction principle: Styrene + formaldehyde (HCHO) → red-brown reaction product.
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Color change indicator: From white to red brown.
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Ambient operating conditions: Temperature range 0 °C to 40 °C; absolute humidity 3 to 15 mg H₂O/L.
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Time for measurement: Approx. 3 minutes under standard conditions.
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Measurement principle: A fixed volume of air (via a pump, e.g., the Dräger Accuro®) is drawn through the tube; the reagent inside reacts if the target gas is present and shows a colored stain whose length corresponds to concentration.
Typical Applications
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Spot measurements in industrial or occupational settings for styrene vapour exposure.
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Measurement of concentration peaks in the breathing zone of personnel.
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Checking for vapour leaks in confined spaces, tanks, shafts, sewers etc.
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Pre-entry tests before personnel enter a potentially contaminated area.
Usage Notes & Considerations
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Requires compatible pump equipment (e.g., the Dräger Accuro bellows pump) for drawing the air sample.
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Ensure ambient conditions (temperature/humidity) are within specification to maintain accuracy.
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Be aware of cross-sensitivity: Other organic compounds that react with the formaldehyde/sulfuric acid indicating system (such as xylene, toluene, butadiene, ethyl benzene) may interfere with accurate styrene measurement. In the presence of these, measuring monostyrene may be impossible.
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Storage and shelf-life: While a specific shelf life isn’t always highlighted in all sources, one distributor lists a shelf life of 2 years for this tube.
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Delivery concerns: This product is classified as dangerous goods (since reagents/chemicals are involved) which might affect shipping method, especially for international shipments.
Product Benefits
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Rapid detection: Designed for quick “on-the-spot” readings rather than long laboratory analysis.
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Portable and field-friendly: Good for field safety teams, industrial hygiene monitoring, plant maintenance teams.
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Trusted system: Part of the Dräger tube system with wide industry acceptance.
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Broad detecting capability: While focused on styrene, it provides flexibility in occupational hygiene applications.