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  3. QOAEZK 0.22UM

QOAEZK 0.22UM Sterile Vacuum Filter Pes Membrane Wrappe 705353119019 250ML

0.22um Qoaezk 705353119019 250ml Sterile Vacuum Filter Units With Pes Membrane Individually Wrappe

( Brand: Qoaezk ), ( Part Type: Vacuum Filter Unit ), ( Item Weight: 4.6 Ounces ), ( Style: Pes ), ( Package Dimensions: 11.89 X 5.43 X 4.37 Inches ), ( Size: 250ml ), ( UPC: 705353119019 )

Review QOAEZK 250ml Sterile Vacuum Filter Units Pes Membrane Individually Wrappe

The **QOA EZK 705353119019 250ml Sterile Vacuum Filter with 0.22 m PES Membrane** is a high-performance filtration device meticulously engineered for precision laboratory applications where sterility, consistency, and reliability are paramount. Designed with a robust, leak-proof vacuum system, this filter ensures efficient and contamination-free processing of liquids, making it an indispensable tool in microbiology, biochemistry, and pharmaceutical research. The **0.22-micron polyethersulfone (PES) membrane** is a cutting-edge filtration medium renowned for its exceptional chemical resistance, low protein binding, and superior flow rates, allowing for rapid and thorough separation of particles, bacteria, and other microorganisms while maintaining the integrity of sensitive biomolecules. The sterile packaging guarantees a pristine, uncontaminated surface, eliminating the risk of cross-contamination during sample preparation or sterile filtration tasks. With a capacity of **250ml**, this filter is ideal for medium-scale applications, offering a balance between efficiency and practicality for routine laboratory procedures such as cell culture media sterilization, buffer preparation, and sample clarification. Its ergonomic design and compatibility with standard vacuum filtration setups ensure ease of use, while the durable construction guarantees long-term durability under rigorous laboratory conditions. Whether used in sterile filtration, sample concentration, or the removal of particulate matter, this filter delivers uncompromising performance, making it a trusted choice for researchers and technicians demanding precision and sterility in their workflows.

### **Pros and Cons of buying a QOA EZK 705353119019 (250ml Sterile Vacuum Filter, 0.22 m PES Membrane, Wrapped)**

#### **Pros:**

1. **High Purity Filtration** The 0.22 m pore size effectively removes bacteria, endotoxins, and most viruses, making it suitable for sterile filtration in laboratory, pharmaceutical, and biotechnology applications.

2. **Sterile and Pre-Wrapped** The filter is individually wrapped, ensuring sterility before use, reducing contamination risks during handling.

3. **Compatibility with Common Solvents** Polyether sulfone (PES) membranes are chemically resistant to a wide range of solvents, acids, and bases, making them versatile for various filtration tasks.

4. **Large Volume Capacity (250ml)** Suitable for medium-scale filtrations, such as preparing cell culture media, buffers, or sterile water for injections (SWFI).

5. **Durable and Reliable** PES membranes are known for their mechanical strength and long-term stability under vacuum conditions.

6. **Easy to Use** Designed for standard vacuum filtration setups, requiring minimal additional equipment.

7. **Regulatory Compliance** Likely meets industry standards (e.g., USP, EP, or FDA) for sterile filtration, which is critical in pharmaceutical and bioprocessing applications.

8. **Cost-Effective for Bulk Use** While individual filters are priced moderately, the 250ml size reduces the need for frequent replacements compared to smaller filters.

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#### **Cons:**

1. **Single-Use Only** Like most sterile filters, this is a disposable item, leading to waste generation and higher long-term costs if used frequently.

2. **Limited Flow Rate** Compared to larger filters (e.g., 500ml or 1L), the 250ml capacity may require multiple filtrations for larger volumes, increasing time and labor.

3. **Potential Clogging** If filtering highly particulate or viscous samples, the membrane may clog quickly, reducing efficiency.

4. **Cost per Use** While reasonable for occasional use, the cumulative expense of disposable filters can be high in high-throughput laboratories.

5. **Storage Requirements** Sterile, pre-wrapped filters must be stored properly (e.g., in a clean, dry environment) to maintain sterility until use.

6. **Vacuum Dependency** Performance relies on a consistent vacuum source; fluctuations can affect filtration speed and completeness.

7. **Limited Reusability** Unlike some non-sterile filters, PES membranes are not typically autoclavable or reusable, adding to disposal costs.

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### **Conclusion**

The **QOA EZK 705353119019 (250ml sterile vacuum filter, 0.22 m PES)** is a reliable choice for applications requiring high-purity sterile filtration, such as cell culture, pharmaceutical preparations, or laboratory reagent sterilization. Its **sterile packaging, chemical resistance, and compatibility with common solvents** make it ideal for sensitive applications where contamination is a critical concern. However, its **single-use nature, limited volume, and potential clogging issues** may pose challenges in high-volume or long-term workflows.

For **small-scale, occasional, or high-purity applications**, this filter is a strong recommendation due to its balance of performance and convenience. For **large-scale or frequent filtrations**, evaluating alternatives like **larger volume filters, reusable systems, or cost-sharing with colleagues** may be more economical.

**Final Recommendation:**

Purchase this filter if you need a **sterile, high-efficiency 0.22 m PES filter for medium-volume applications** where cost per use is acceptable. If budget or throughput constraints are concerns, consider bulk purchasing or exploring reusable filtration systems for repetitive tasks. Always verify compatibility with your specific solvents and sample types before use.

Details:

Low hold-up volume. Prepare the liquid that needs to be filtered and ensure does not contain large solid particles. High strength and heat resistance. Operating Steps: Before use, make sure the filter is intact and undamaged.

Packing Individually packaged, sterile, and certified ; designed for filtering storing cell culture media, biological fluids, other aqueous solutions. Certificate Design, manufacture and sterilization processes meet camp requirements. High-quality PS material: Odorless and tasteless, harmless to the human body, in line with hygiene safety standards. Exquisite detail design: Simplify the vacuum tube connection and adapt to various pump pipe diameter hoses.

Applications PES membrane has a 0.22m pore size and 64sq cm area; provides the fastest flow rates highest throughput could filter 1.5 2L, lowest protein binding low , best filtering of cell culture media. Safety Polystyrene filter funnel has a 250mL capacity and 45mm diameter polyethylene neck adaptor with an angled hose connector that simplifies vacuum line attachment Gamma sterilization. Wear appropriate personal protective equipment to prevent chemicals from splashing onto the skin or eyes. Connect the filter to liquid container, ensuring a tight and secure connection with no leakage.

High Performance Larger flux and faster flow rate. Filter membrane pore size identification, ensuring no confusion in equipment use.: High flow rate, high throughput, efficient filtration: Irradiation sterilization, clear labeling, enzyme-free and heat-source-free. Pay attention to controlling the pouring speed avoid spilling.

Excellent material properties ensure the success of efficient experiments. Poly carbonate is a high-performance thermoplastic material, renowned for its excellent transparency. Introduce the sample of filter into.

specifications plasticwarelabsuppy:

  • brand: Qoaezk
  • part type: Vacuum Filter Unit
  • item weight: 4.6 Ounces
  • style: Pes
  • package dimensions: 11.89 X 5.43 X 4.37 Inches
  • size: 250ml
  • upc: 705353119019

shipping plasticwarelabsuppy:

  • type: Fixed
  • cost: $0.00
  • service: Standard
  • transit: 3-6 Days
  • class: Standard

returns plasticwarelabsuppy:

  • time: 30 Days
  • policy: Returns Accepted
  • paid by: Seller
  • method: Money back

seller plasticwarelabsuppy:

  • rating: 99.4%
  • # reviews: 2058
  • city: Denver, Colorado

general plasticwarelabsuppy:

  • Medical, Lab Dental Supplies > Glassware Plasticware > Other Medical Lab Glassware
  • condition: New

offer plasticwarelabsuppy:

  • availability: In Stock
  • started: March 25, 2026
  • quantity: 1
  • options: Ship-to-home
  • sold: 0

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part type: vacuum filter unit, item weight: 4.6 ounces, style: pes, package dimensions: 11.89 x 5.43 x 4.37 inches, size: 250ml,
category: business & industrial > medical, lab dental supplies > glassware plasticware > medical lab glassware, sku: 13524476078597983,
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