The PAK Marker Spray Can is a specialized aerosol designed to detect Polycyclic Aromatic Hydrocarbons (PAHs), particularly those associated with tar, in asphalt and bituminous materials. It is widely used in construction and civil engineering to identify potentially hazardous substances such as coal tar, which are often subject to strict environmental and safety regulations.
The spray applies a white coating that reacts with PAHs. After drying, contaminated areas change colour, providing a clear visual indication of the presence of hazardous compounds.
Key Features
- Detects PAHs in asphalt and bituminous surfaces
- Clear visual indication via colour change (white to yellow/brown)
- Fast and simple on-site application
- Results visible in approximately 15 minutes
- Can be enhanced with UV light for improved visibility
- Suitable for a wide range of construction materials
- Portable aerosol format for easy use in the field
Technical Specifications
- Volume: 500 ml
- Binder: Acrylic
- Pigments: Mineral and organic (free from heavy metals such as lead and vanadium)
- Solvents: Specially formulated blend to dissolve PAHs
- Propellant: Isobutane and propane
- Detection Threshold: Identifies PAH levels above 100 ppm
- Drying Time: Approximately 15 minutes
- Operating Temperature Range: -10°C to 50°C
- Storage Temperature Range: 15°C to 25°C
- Application Surfaces: Concrete, bitumen, gravel, and similar materials
- Application Method: Spray a thin layer, allow to dry, observe colour change
Available Options
- Standard 500 ml aerosol can
- Compatible UV inspection accessories available separately
Applications
- Road construction and maintenance
- Asphalt and bitumen testing
- Environmental inspections
- Hazardous material identification (coal tar detection)
- Site surveys and compliance checks
Accessories/Spares
- Ultra Violet Light (Product Code: BM506) – enhances detection by causing PAH-contaminated areas to fluoresce yellow-green under UV illumination
Delivery & Lead Time
- Standard items available from stock
- Typical delivery: 2–5 working days (UK)
- Express shipping available on request (additional charges may apply)
- International delivery options available
Compliance & Quality
- Designed for professional use in construction and environmental testing
- Provides qualitative indication of PAHs (not for quantitative analysis)
- Manufactured using materials free from heavy metals
- Suitable for use in accordance with standard site safety practices
Frequently Asked Questions
Q. Does the PAK Marker measure PAH concentration?
A. No, it provides a visual indication only and does not quantify PAH levels.
Q. How long does it take to see results?
A. Approximately 15 minutes after application.
Q. Can results be enhanced?
A. Yes, a UV light can be used to make contamination more visible, especially in low-light conditions.
Q. What colour change indicates contamination?
A. A shift from white to yellow or light brown indicates the presence of PAHs.
Q. Are there any safety precautions?
A. Yes, use in well-ventilated areas, keep away from open flames, and store between 15°C and 25°C.
Q. Does the PAK Marker Spray have a shelf life?
A. Yes, 5 years.
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