Quick Selection Guide
| Use Case | Recommended Series |
| Routine lab filtration | Disposable PTFE |
| HPLC / GC / analytical | Standard PTFE (Best Choice) |
| Pharmaceutical / sterile | Sterile PTFE |
| Gas filtration / venting | Standard or Sterile PTFE |
Hydrophobic PTFE Syringe Filters for Different Applications
Widely used in:
- Gas filtration & venting systems
- Organic solvent filtration
- Strong acid and alkaline filtration
- HPLC / GC sample preparation (non-aqueous systems)
- Pharmaceutical quality control
- Environmental and chemical analysis
Product Series Architecture
Core Analytical Series (Primary)
Hawach Standard PTFE Syringe Filters – For HPLC, GC, and analytical workflows
Routine Use Series
Disposable PTFE Syringe Filters – Cost-effective for daily filtration
Sterile High-Purity Series
Sterile PTFE Syringe Filters – For pharmaceutical and aseptic applications
Product System Overview
| Series | Positioning | Sterility | Key Advantages | Main Applications |
| Disposable PTFE | Routine filtration | Non-sterile | Cost-effective, fast filtration | General lab use |
| Standard PTFE | Analytical-grade | Optional | Low extractables, stable flow | HPLC, GC |
| Sterile PTFE | Pharma-grade | Gamma sterile | High purity, contamination-free | Pharma, gas filtration |
For aqueous filtration, consider hydrophilic PTFE syringe filters.
What Makes Hydrophobic PTFE Syringe Filters Unique?
- Naturally hydrophobic – ideal for gas filtration
- Zero water permeability – prevents moisture ingress
- Excellent chemical resistance – solvents, acids, bases
- Low protein binding – minimizes sample loss
- High temperature resistance – stable up to 60°C
- Wide pore size range – 0.1–10 μm
- Compatible with both gas and liquid filtration
PTFE vs Other Membrane Filters
| Membrane | Compatibility | Limitation | Best For |
| PTFE | Organic solvents + gases | Pre-wetting for water | Solvent/gas filtration |
| Nylon | Moderate | Limited chemical resistance | Aqueous/alcohol solutions |
| PES | Aqueous only | Not solvent compatible | Biological samples |
| PVDF | Moderate | Limited solvent range | Protein binding assays |
PTFE = Best choice for solvent + gas filtration
Selection Guide – How to Choose
By Application
- Routine → Disposable PTFE
- Analytical (HPLC / GC) → Standard PTFE
- Sterile / pharma → Sterile PTFE
By Sample Type
- Organic solvents → Hydrophobic PTFE
- Gas / air → Hydrophobic PTFE
- Strong acids / bases → PTFE
Aqueous solutions require pre-wetting or hydrophilic PTFE.
By Pore Size
- 0.45 μm → General filtration
- 0.22 μm → Fine filtration / bacteria removal
- 1.0 μm → Gas sterilization
Gas Filtration & Venting
Hydrophobic PTFE syringe filters are widely used in gas filtration due to their water-repellent membrane structure.
Key Benefits:
- Prevents moisture ingress
- Maintains sterile airflow
- Ideal for fermentation venting
- Protects tanks and systems
- Suitable for air, steam, and gas filtration
Ordering Information
Below are the most commonly ordered configurations. For custom pore sizes, diameters, or OEM requirements, please contact us.
1. Disposable PTFE Syringe Filters
| Product Code | Pore Size | Diameter | Membrane | Sterility | Packaging |
| 11022101 | 0.22 µm | 13 mm | PTFE | Non-sterile | 100/box |
| 11022102 | 0.45 µm | 13 mm | PTFE | Non-sterile | 100/box |
| 11022103 | 0.22 µm | 25 mm | PTFE | Non-sterile | 100/box |
| 11022104 | 0.45 µm | 25 mm | PTFE | Non-sterile | 100/box |
2. Standard Hawach Series PTFE Syringe Filters
- Diameter: 4 / 13 / 25 / 33 / 50 mm
- Pore Size: 0.1–10 μm
- Housing: PP
- Pre-filter: GF / PP
- Max Pressure: 5.2 bar
| Item Code | Pore Size(µm) | Diameter(mm) | Pre-filter | Quantity/pk |
| 11024101 | 0.1 | 4 | No | 100pcs |
| 11024102 | 0.22 | 4 |
| 11024103 | 0.45 | 4 |
| 11028117 | 0.1 | 13 |
| 11023101 | 0.22 | 13 |
| 11023102 | 0.45 | 13 |
| 11028543 | 0.1 | 13 | PP |
| 11028502 | 0.22 | 13 |
| 11028503 | 0.45 | 13 |
| 11028533 | 0.1 | 13 | GF |
| 11028534 | 0.22 | 13 |
| 11028535 | 0.45 | 13 |
| 11028123 | 0.1 | 25 | No |
| 11023103 | 0.22 | 25 |
| 11023104 | 0.45 | 25 |
| 11028509 | 0.1 | 25 | PP |
| 11028510 | 0.22 | 25 |
| 11028511 | 0.45 | 25 |
| 11028541 | 0.1 | 25 | GF |
| 11028542 | 0.22 | 25 |
| 11028501 | 0.45 | 25 |
| 11028129 | 0.1 | 33 | No | 50pcs |
| 11028141 | 0.22 | 33 |
| 11028108 | 0.45 | 33 |
| 11028517 | 0.1 | 33 | PP |
| 11028518 | 0.22 | 33 |
| 11028519 | 0.45 | 33 |
| 11028549 | 0.1 | 33 | GF |
| 11028550 | 0.22 | 33 |
| 11028551 | 0.45 | 33 |
| 11028135 | 0.1 | 50 | No | 25pcs |
| 11028109 | 0.22 | 50 |
| 11028110 | 0.45 | 50 |
Note: The table displays only the most commonly used aperture sizes; for additional dimensions, please contact us.
3. Sterile PTFE Syringe Filters
- Diameter: 4–50 mm
- Pore Size: 0.1–10 μm
- Sterility: Gamma sterile
- Application: Gas filtration, pharmaceutical use
| Cat# | Pore Size(μm) | Diameter(mm) | Sterility | Package(pcs/pk) |
| 11024301 | 0.1 | 4 | Gamma sterile | 100 |
| 11024302 | 0.22 | 4 | Gamma sterile | 100 |
| 11024303 | 0.45 | 4 | Gamma sterile | 100 |
| 11024304 | 5 | 4 | Gamma sterile | 100 |
| 11028317 | 0.1 | 13 | Gamma sterile | 100 |
| 11028303 | 0.22 | 13 | Gamma sterile | 100 |
| 11028304 | 0.45 | 13 | Gamma sterile | 100 |
| 11028318 | 0.65 | 13 | Gamma sterile | 100 |
| 11028319 | 1 | 13 | Gamma sterile | 100 |
| 11028320 | 2 | 13 | Gamma sterile | 100 |
| 11028321 | 3 | 13 | Gamma sterile | 100 |
| 11028322 | 5 | 13 | Gamma sterile | 100 |
| 11028323 | 0.1 | 25 | Gamma sterile | 100 |
| 11028305 | 0.22 | 25 | Gamma sterile | 100 |
| 11028306 | 0.45 | 25 | Gamma sterile | 100 |
| 11028324 | 0.65 | 25 | Gamma sterile | 100 |
| 11028325 | 1 | 25 | Gamma sterile | 100 |
| 11028326 | 2 | 25 | Gamma sterile | 100 |
| 11028327 | 3 | 25 | Gamma sterile | 100 |
| 11028328 | 5 | 25 | Gamma sterile | 100 |
| 11028329 | 0.1 | 33 | Gamma sterile | 50 |
| 11028307 | 0.22 | 33 | Gamma sterile | 50 |
| 11028308 | 0.45 | 33 | Gamma sterile | 50 |
| 11028330 | 0.65 | 33 | Gamma sterile | 50 |
| 11028331 | 1 | 33 | Gamma sterile | 50 |
| 11028332 | 2 | 33 | Gamma sterile | 50 |
| 11028333 | 3 | 33 | Gamma sterile | 50 |
| 11028334 | 5 | 33 | Gamma sterile | 50 |
| 11028335 | 0.1 | 50 | Gamma sterile | 25 |
| 11028309 | 0.22 | 50 | Gamma sterile | 25 |
| 11028310 | 0.45 | 50 | Gamma sterile | 25 |
| 11028336 | 0.65 | 50 | Gamma sterile | 25 |
| 11028337 | 1 | 50 | Gamma sterile | 25 |
| 11028338 | 2 | 50 | Gamma sterile | 25 |
| 11028339 | 3 | 50 | Gamma sterile | 25 |
| 11028340 | 5 | 50 | Gamma sterile | 25 |
Why Choose Hawach PTFE Syringe Filters?
- ISO 13485 & ISO 9001 certified manufacturing
- Cleanroom production (ISO Class 7)
- Strict quality control & batch traceability
- Consistent performance across bulk orders
FAQ
What is a hydrophobic PTFE syringe filter used for?
Used for filtration of gases, organic solvents, and aggressive chemicals.
Can PTFE filters be used for water?
No, requires pre-wetting. Use hydrophilic PTFE for aqueous samples.
Can PTFE filters be used for HPLC?
Yes, especially for organic solvent-based HPLC.
What pore size should I choose?
0.45 μm (general), 0.22 μm (fine), 0.1 μm (gas sterilization).
Request & Customization
Free samples available
Fast global delivery
OEM & private label supported
Bulk supply with stable quality
Technical support for method development