Diameter: 4mm, 13mm, 25mm, 33mm, 50mm
Pore Size: 0.1μm, 0.22μm, 0.45μm, 0.8μm, 1.0μm, 3.0μm, 5.0μm
Availability: In Stock
Cellulose Acetate (CA) Syringe Filters (Sterile & Non-Sterile)
Description
Hydrophilic Low Protein Binding Filtration for Biological & Aqueous Samples
Hawach cellulose acetate (CA) syringe filters are hydrophilic, low protein binding membrane filters designed for aqueous solutions, biological samples, and laboratory clarification.
Compared with general-purpose membranes, CA filters offer:
- Low protein adsorption for improved sample recovery
- Hydrophilic structure for direct aqueous filtration (no pre-wetting)
- Stable and fast flow performance
- Minimal extractables for clean analytical results
- Sterile and non-sterile configurations for different workflows
Ideal for cell culture media, serum filtration, and biological sample preparation
Recommended Configuration (Best for Biological Samples)
0.22 µm Sterile CA Syringe Filter
- Low protein binding membrane (high recovery of proteins & enzymes)
- Gamma sterilized (SAL 10⁻⁶) – ready for aseptic use
- High flow rate for efficient filtration
- Reliable for microbiology and cell culture workflows
Best choice for sterile biological and protein-sensitive filtration
How to Choose (Quick Decision Guide)
- Cell culture / sterile biological filtration -0.22 µm sterile CA
- Protein / serum clarification -0.22 µm CA
- General aqueous filtration -0.45 µm CA
- Pre-filtration (turbid samples) -≥0.65 µm CA
Applications
CA syringe filters are widely used in:
- Cell culture media filtration
- Serum and protein solution clarification
- Biological sample preparation
- Microbiological testing
- Environmental water analysis
- Pharmaceutical aqueous QC testing
- General laboratory filtration
Instruction Drawing
Product Configuration Options
| Type | Sterility | Positioning | Best For |
| Routine CA | Non-sterile | Cost-efficient | General lab filtration |
| Analytical CA | Non-sterile | High reproducibility | HPLC aqueous prep |
| Sterile CA | Gamma sterile | Bio/pharma grade | Cell culture, microbiology |
Key Features
- Hydrophilic membrane → direct filtration of aqueous solutions
- Low protein binding → improved biological sample recovery
- Fast flow rate → reduces filtration time
- Minimal extractables → clean analytical performance
- Sterile option available → ready for aseptic workflows
- Cost-effective → ideal for routine laboratory use
Technical Specifications
| Parameter | Specification |
| Membrane | Cellulose Acetate (CA) |
| Type | Hydrophilic |
| Pore Sizes | 0.1 / 0.22 / 0.45 / 0.8 / 1.0 / 3.0 / 5.0 µm |
| Diameters | 4 / 13 / 25 / 33 / 50 mm |
| Housing | Medical-grade polypropylene (PP) |
| Max Pressure | ≤ 5.2 bar |
| Temperature | Up to 60°C |
| Sterility | Gamma irradiation (SAL 10⁻⁶) |
| Endotoxin | < 0.25 EU/mL (sterile series) |
| Protein Binding | Low (validated for BSA, IgG) |
SKU & Ordering Information
Below are the most commonly ordered configurations. For custom pore sizes, diameters, or OEM requirements, please contact us.
Sterile CA Syringe Filters
| Item Code | Pore Size(µm) | Diameter(mm) | Sterile | Quantity/pk |
| 11054401 | 0.22 | 4 | Gamma sterile | 100 |
| 11054402 | 0.45 | 4 | Gamma sterile | 100 |
| 11058407 | 0.1 | 13 | Gamma sterile | 100 |
| 11058403 | 0.22 | 13 | Gamma sterile | 100 |
| 11058404 | 0.45 | 13 | Gamma sterile | 100 |
| 11058414 | 0.1 | 25 | Gamma sterile | 100 |
| 11058405 | 0.22 | 25 | Gamma sterile | 100 |
| 11058406 | 0.45 | 25 | Gamma sterile | 100 |
| 11058421 | 0.1 | 33 | Gamma sterile | 50 |
| 11058422 | 0.22 | 33 | Gamma sterile | 50 |
| 11058423 | 0.45 | 33 | Gamma sterile | 50 |
| 11058430 | 0.1 | 50 | Gamma sterile | 25 |
| 11058431 | 0.22 | 50 | Gamma sterile | 25 |
| 11058432 | 0.45 | 50 | Gamma sterile | 25 |
Non-Sterile CA Syringe Filters
| Item Code | Pore Size(µm) | Diameter(mm) | Sterile | Pre-filter | Quantity/pk |
| 11054201 | 0.22 | 4 | No | No | 100 |
| 11054202 | 0.45 | 4 | No | No | 100 |
| 11058207 | 0.1 | 13 | No | No | 100 |
| 11053201 | 0.22 | 13 | No | No | 100 |
| 11053202 | 0.45 | 13 | No | No | 100 |
| 11058214 | 0.1 | 25 | No | No | 100 |
| 11053203 | 0.22 | 25 | No | No | 100 |
| 11053204 | 0.45 | 25 | No | No | 100 |
| 11058221 | 0.1 | 33 | No | No | 50 |
| 11058222 | 0.22 | 33 | No | No | 50 |
| 11058223 | 0.45 | 33 | No | No | 50 |
| 11058230 | 0.1 | 50 | No | No | 25 |
| 11058231 | 0.22 | 50 | No | No | 25 |
| 11058232 | 0.45 | 50 | No | No | 25 |
| 11058601 | 0.1 | 13 | No | PP | 100 |
| 11058602 | 0.22 | 13 | No | PP | 100 |
| 11058603 | 0.45 | 13 | No | PP | 100 |
| 11058610 | 0.1 | 25 | No | PP | 100 |
| 11058611 | 0.22 | 25 | No | PP | 100 |
| 11058612 | 0.45 | 25 | No | PP | 100 |
| 11058619 | 0.1 | 33 | No | PP | 50 |
| 11058620 | 0.22 | 33 | No | PP | 50 |
| 11058621 | 0.45 | 33 | No | PP | 50 |
| 11058637 | 0.1 | 13 | No | GF | 100 |
| 11058638 | 0.22 | 13 | No | GF | 100 |
| 11058639 | 0.45 | 13 | No | GF | 100 |
| 11058646 | 0.1 | 25 | No | GF | 100 |
| 11058647 | 0.22 | 25 | No | GF | 100 |
| 11058648 | 0.45 | 25 | No | GF | 100 |
| 11058655 | 0.1 | 33 | No | GF | 50 |
| 11058656 | 0.22 | 33 | No | GF | 50 |
| 11058657 | 0.45 | 33 | No | GF | 50 |
CA vs Other Membranes
| Membrane | Strength | Best Use |
| CA | Low protein binding, cost-effective | Biological aqueous filtration |
| PES | Ultra-low protein binding | Proteins, enzymes |
| PVDF | Broad compatibility | Mixed applications |
| PTFE | Organic solvents | Chemical & gas filtration |
For ultra-low protein binding workflows – PES Syringe Filters
For organic solvent filtration – PTFE Syringe Filters
For broader chemical compatibility – PVDF Syringe Filters
Why Choose Hawach CA Syringe Filters?
- CE/ ISO 9001 certified manufacturing
- Cleanroom production environment
- Low protein binding validated performance
- Stable pore structure and batch consistency
- OEM / private label support
- Factory-direct pricing for bulk supply
Ordering & Customization
- Bulk supply available for laboratories and distributors
- OEM branding & private label packaging
- Fast global delivery from stock
- Free samples for qualified customers
Request quotation within 24 hours
FAQ
What is a cellulose acetate syringe filter used for?
For aqueous and biological filtration, especially cell culture media, serum, and protein sample clarification.
Is CA hydrophilic?
Yes, CA is naturally hydrophilic and filters water-based solutions directly.
Does CA bind proteins?
CA has low protein binding, suitable for biological samples requiring good recovery.
Can CA filters be used for organic solvents?
No, CA is only suitable for aqueous solutions.
What pore size is used for sterilization?
0.22 µm is standard for bacterial removal and sterile filtration.
Are CA syringe filters reusable?
No, they are single-use to prevent contamination.
The quality has a guarantee
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