PTFE FILTER TAPE
Precision Filtration for X-ray Fluorescence (XRF) Spectrometry-Based Environmental Monitoring
Description
In response to the worldwide concern over toxic air pollutants and R&D efforts to study emissions and pollution sources, we have developed PTFE filter tape specially designed for use in X-ray fluorescence (XRF) spectrometry to monitor metallic contaminants in air streams. Contaminants are captured in the tape’s porous membrane structure in preparation for elemental analysis.
Our filter tape has extremely low metal content with efficient airflow capability and a retention rating of 99.7% for 0.3 µm particles, ensuring accurate and reliable analytical results.
Features & Benefits
• Excellent chemical stability – resistant to most acids, alkalis, and organic solvents
• Ultra-low metal content – producing a high signal-to-noise ratio for accurate analysis
• Efficient particle retention – captures total suspended particulate (TSP), inhalable particulate material ≤10 µm (PM10), and ≤2.5 µm (PM2.5)
• Highly pliable design – easy to handle and use in automated systems
• Reliable analytical results – consistent performance for precise measurements
• 99.7% retention efficiency – for particles as small as 0.3 µm
• Optimized for XRF analysis – specifically designed for spectroscopic applications
Applications
• Metal monitoring with XRF spectroscopy – precise detection of metallic contaminants
• Air quality monitoring stations – continuous environmental surveillance
• XRF monitoring equipment – automated analytical systems
• Emission source studies – research and compliance monitoring
• Environmental compliance – regulatory air quality assessment
• Industrial stack monitoring – workplace and facility air quality control
Technical Specifications
Chemistry | Hydrophobic Polytetrafluoroethylene (PTFE) |
| Wettability | Hydrophobic |
Retention rating | 2 µm |
Dimensions | W：19 mm (0.75″) , 30 mm (1.18″) |
L：30 m (98.4′), (40 m (131.2′), 100 m (328.0′) | |
Core：41.2 mm (1.62″), 52.8 mm (2.08″) | |
Thickness | 70 µm, |
| Gurley (s, 300 cc/1 in2 @ 4.88 inches H2O) | 2.6 |
Particle retention (0.3 µm) | ≥99.7% |
Typical Trace Element Concentration by XRF
| Ion | Ion | ||
| Al | 1.3 ng/cm2 | Sr | 0.3 ng/cm2 |
| Si | 1.2 ng/cm2 | Y | 0.2 ng/cm2 |
| P | 1.0 ng/cm2 | Zr | 0.3 ng/cm2 |
| S | 1.8 ng/cm2 | Mo | ND |
| Cl | 1.9 ng/cm2 | Pd | 1.6 ng/cm2 |
| K | 1.1 ng/cm2 | Ag | 1.6 ng/cm2 |
| Ca | 0.5 ng/cm2 | Cd | 1.5 ng/cm2 |
| Ti | 0.6 ng/cm2 | In | 1.3 ng/cm2 |
| V | 0.1 ng/cm2 | Sn | 1.9 ng/cm2 |
| Cr | 0.4 ng/cm2 | Sb | 1.7 ng/cm2 |
| Mn | ND | Te | ND |
| Fe | 0.5 ng/cm2 | Cs | ND |
| Co | 0.4 ng/cm2 | Ba | 2.1 ng/cm2 |
| Ni | 1.0 ng/cm2 | La | 2.4 ng/cm2 |
| Cu | 0.9 ng/cm2 | Ce | ND |
| Zn | 1.5 ng/cm2 | W | ND |
| Ga | 1.2 ng/cm2 | Pt | ND |
| G3 | 0.3 ng/cm2 | Au | 0.1 ng/cm2 |
| As | 0.6 ng/cm2 | Hg | 0.3 ng/cm2 |
| Se | 0.3 ng/cm2 | Tl | 0.1 ng/cm2 |
| Br | 0.1 ng/cm2 | Pb | 1.2 ng/cm2 |
| Rb | 0.3 ng/cm2 | Bi | ND |
ND = Not detectable
