Filter Media: Glass Fiber
Housing: Medical PP
Diameter: 4mm, 13mm, 25mm, 33mm, 50mm
Pore Size: 0.45μm, 1.0μm, 1.6μm
Availability: In Stock
Glass Fiber Syringe Filters (GF) – Sterile & Non-Sterile
Description
High Flow Pre-Filtration for Viscous & Particle-Loaded Samples
Glass fiber syringe filters are depth pre-filtration membranes designed for high-flow sample clarification and particulate removal.
Hawach glass fiber syringe filters (GF) are high-flow, depth filtration membranes designed for pre-filtration, particulate removal, and clarification of highly loaded or viscous samples. Made from 100% borosilicate glass fiber, GF filters provide extremely high flow rate, strong dirt-holding capacity, excellent compatibility with aqueous & organic solutions, and reliable pre-filtration before fine membrane filtration.
Ideal for HPLC sample prep, biological fluids, fermentation broth, and dirty samples.
Recommended Choice for Pre-Filtration
Glass Fiber Syringe Filter (1.0 µm) – Standard or Sterile
- High dirt-holding capacity – prevents clogging of final membrane filters
- Extremely high flow rate – fast processing of viscous samples
- Broad chemical compatibility – aqueous & organic solvents
- Sterile option available for aseptic pre-filtration
Best used as first-stage pre-filtration before fine filtration (CA / PES / PVDF / PTFE)
Instruction Drawing
Quick Selection Guide
| Use Case | Recommended Series | Pore Size |
| Pre-filtration before HPLC / membrane filters | Standard GF | 1.0 – 1.6 µm |
| Fermentation broth / biological fluids | Sterile GF | 0.45 µm |
| Viscous or particle-rich samples | Standard GF | 1.0 – 1.6 µm |
| High particulate samples (general clarification) | Standard GF | 0.45 µm |
| General lab clarification | Standard GF | 0.45 – 1.0 µm |
Applications
Glass fiber syringe filters are widely used in:
- Pre-filtration before HPLC / UHPLC analysis
- Fermentation broth clarification
- Biological sample cleanup
- Food & beverage testing
- Environmental water analysis
- Viscous or particle-rich liquid filtration
- Laboratory sample preparation workflows
Product Series Architecture
| Series | Sterility | Positioning | Main Function |
| Standard GF | Non-sterile | Routine lab use | Pre-filtration & clarification |
| Sterile GF | Gamma sterile | Bio/pharma grade | Aseptic sample pre-filtration |
Key Features
- 100% borosilicate glass fiber membrane – consistent depth filtration
- Extremely high flow rate – fast processing of high-load samples
- High dirt-holding capacity – anti-clogging, longer filter life
- Broad chemical compatibility – aqueous & most organic solvents
- Low extractables – suitable for HPLC pre-filtration
- Low hold-up volume – good sample recovery
- Sterile version – gamma irradiated (SAL 10⁻⁶) for aseptic workflows
Technical Specifications
| Parameter | Specification |
| Membrane Material | 100% borosilicate glass fiber (GF) |
| Filtration Type | Depth filtration |
| Pore Sizes | 0.45 / 1.0 / 1.6 µm |
| Diameters | 4 mm, 13 mm, 25 mm, 33 mm, 50 mm |
| Housing Material | Medical-grade polypropylene (PP) |
| Max Operating Pressure | ≤ 5.2 bar (approx. 75 psi) |
| Temperature Range | Up to 60°C |
| Sterility (Sterile Series) | Gamma irradiation (SAL 10⁻⁶) |
| Chemical Compatibility | Aqueous & most organic solvents |
| Typical Flow Rate | > 100 mL/min at 1 bar (25 mm, 0.45 µm) |
Detailed SKU & Ordering Information
Sterile Glass Fiber Syringe Filters (Pharma & Biotech Grade)
| Item Code | Pore Size(µm) | Diameter(mm) | Sterile | Quantity/pk |
| 11078301 | 0.7 | 13 | Gamma sterile | 100 |
| 11078302 | 1 | 13 | Gamma sterile | 100 |
| 11078303 | 0.7 | 25 | Gamma sterile | 100 |
| 11078304 | 1 | 25 | Gamma sterile | 100 |
| 11078307 | 0.7 | 33 | Gamma sterile | 50 |
| 11078308 | 1 | 33 | Gamma sterile | 50 |
| 11078310 | 0.7 | 50 | Gamma sterile | 25 |
| 11078311 | 1 | 50 | Gamma sterile | 25 |
Non-Sterile Glass Fiber Syringe Filters (Routine & Analytical Use)
| Item Code | Pore Size(µm) | Diameter(mm) | Sterile | Quantity/pk |
| 11078101 | 0.7 | 13 | NO | 100 |
| 11078114 | 1.2 | 13 | NO | 100 |
| 11078103 | 0.7 | 25 | NO | 100 |
| 11078115 | 1.2 | 25 | NO | 100 |
| 11078112 | 2.7 | 25 | NO | 100 |
| 11078107 | 0.7 | 33 | NO | 50 |
| 11078108 | 1 | 33 | NO | 50 |
| 11078109 | 1.6 | 33 | NO | 50 |
Custom options: Pore sizes 1.0 µm, 1.6 µm, and other diameters available upon request. Contact sales for OEM and private label.
Glass Fiber vs Other Membrane Filters
| Membrane | Strength | Best Use | Limitation |
| Glass Fiber (GF) | High flow + high dirt capacity | Pre-filtration, viscous, dirty samples | Not for final sterilization; may shed fibers |
| CA | Low protein binding | Biological aqueous filtration | Not for organic solvents |
| PES | Ultra-low protein binding | Proteins, enzymes | Not for solvents |
| PTFE | Chemical resistance | Organic solvents, gases | Requires pre-wetting for water |
For biological sample filtration – CA Syringe Filters
For protein-sensitive filtration – PES Syringe Filters
For solvent filtration – PTFE Syringe Filters
Why Choose Hawach Glass Fiber Syringe Filters?
| Feature | Benefit |
| High flow depth filtration | Fast processing of viscous or particle-loaded samples |
| Excellent clog resistance | Longer filter life, less clogging |
| Stable borosilicate fiber quality | Consistent performance batch to batch |
| Low extractables | Clean HPLC baselines |
| Sterile option available | Ready for aseptic pre-filtration |
| ISO certified manufacturing | Reliable quality and traceability |
Quality & Manufacturing Assurance
- CE/ ISO 9001 certified production
- ISO Class 7 cleanroom for sterile series manufacturing
- Gamma sterilization – Sterility Assurance Level (SAL 10⁻⁶) (sterile GF)
- 100% borosilicate glass fiber – high purity, low extractables
- Batch traceability – each lot tested for flow, integrity, and particle retention
- Consistent depth filtration – validated for pre-filtration workflows
Frequently Asked Questions (FAQ)
What is a glass fiber syringe filter used for?
It is mainly used for pre-filtration and particulate removal in high-load or viscous samples before final filtration through a membrane filter (CA, PES, PVDF, PTFE).
Can glass fiber filters be used for sterile filtration?
No. GF is a depth pre-filter. For sterile filtration, always follow with a 0.22 µm membrane filter (CA, PES, or PVDF).
Are GF filters hydrophilic or hydrophobic?
Glass fiber is hydrophilic and inert, compatible with both aqueous and most organic solvents.
Why use glass fiber as a pre-filter?
Because it prevents clogging and dramatically increases the lifespan and throughput of final membrane filters – especially for dirty, turbid, or high-viscosity samples.
Can GF filters be used alone?
Yes, for clarification of particulate-loaded samples, but not for sterilization or particle-free final filtration.
Do glass fiber filters shed particles?
High-quality GF filters (Hawach) minimize shedding, but for applications where absolute particle removal is required, always use a final membrane filter downstream.
What pore size should I choose for pre-filtration?
- 0 – 1.6 µm – heavy particulate load, viscous samples, fermentation broth
- 0.45 µm – general pre-filtration before 0.22 µm final filter
Ordering & Customization
Hawach glass fiber syringe filters are available in multiple pore sizes (0.45, 1.0, 1.6 µm), diameters (4–50 mm), and sterility configurations. We support:
- OEM / private label customization (logo, packaging, SKU)
- Bulk supply for distributors and large laboratories
- Fast global delivery from stock
- Free samples for qualified customers
The quality has a guarantee
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