Specifications Table

Product Name – Whatman Uniflo Syringe Filter
Quantity/Pack Size – 13mm,0.22NYL (Pack of 500) – 13mm,0.45NYL (Pack of 500) – 25mm,0.22NYL (Pack of 500) – 25mm,0.45NYL (Pack of 100) – 25mm,0.45NYL (Pack of 500) – 13mm,0.22PVDF (Pack of 500) – 13mm,0.45PVDF (Pack of 500) – 25mm,0.22PVDF (Pack of 500) – 25mm,0.45PVDF (Pack of 100) – 25mm,0.45PVDF (Pack of 500) – 13mm,0.22PTFE (Pack of 500) – 13mm,0.45PTFE (Pack of 500) – 25mm,0.22PTFE (Pack of 500) – 25mm,0.45PTFE (Pack of 500) – 13mm,0.22PES (Pack of 500) – 13mm,0.45PES (Pack of 500) – 25mm,0.22PES (Pack of 500) – 25mm,0.45PES (Pack of 500) – 13mm,0.2H-PTFE (Pack of 100) – 13mm,0.2H-PTFE (Pack of 500) – 13mm,0.45H-PTFE (Pack of 100) – 13mm,0.45H-PTFE (Pack of 500) – 25mm,0.2H-PTFE (Pack of 100) – 25mm,0.2H-PTFE (Pack of 500) – 25mm,0.45H-PTFE (Pack of 100) – 25mm,0.45H-PTFE (Pack of 500) – 13mm,0.2PESS (Pack of 100) – 25mm,0.2PESS (Pack of 45) – 13mm,0.45PESS (Pack of 100) – 25mm,0.2PESS (Pack of 200) – 25mm,0.45PESS (Pack of 45) – 25mm,0.45PESS (Pack of 200) – 25mm,0.22PVDFS (Pack of 45) – 25mm,0.45PVDFS (Pack of 45) – 30mm,0.2NYL (Pack of 100) – 30mm,0.2NYL (Pack of 500) – 30mm,0.45NYL (Pack of 100) – 30mm,0.45NYL (Pack of 500) – 30mm,0.2PVDF (Pack of 100) – 30mm,0.2PVDF (Pack of 500) – 30mm,0.45PVDF (Pack of 100) – 30mm,0.45PVDF (Pack of 500) – 30mm,0.2PTFE (Pack of 100) – 30mm,0.2PTFE (Pack of 500) – 30mm,0.45PTFE (Pack of 100) – 30mm,0.45PTFE (Pack of 500) – 30mm,0.2PES (Pack of 100) – 30mm,0.2PES (Pack of 500) – 30mm,0.45PES (Pack of 100) – 30mm,0.45PES (Pack of 500)
Form – Syringe Filter
Grade – Sterile, HPLC-Certified
Application – Sample Clarification, Particle Removal, HPLC, LC-MS, Protein Filtration

Product Overview

Whatman Uniflo syringe filters are engineered for high-performance filtration in laboratory applications, offering exceptional clarity, low extractables, and consistent flow rates. These sterile, single-use filters are designed with a robust polypropylene housing and a range of membrane materials?including Nylon (NYL), PVDF, PTFE, PES, and Hydrophilic PTFE (H-PTFE)?to suit diverse sample types and analytical requirements. The 0.22?m and 0.45?m pore sizes ensure efficient removal of particulates, bacteria, and contaminants, making them ideal for HPLC, LC-MS, and general sample preparation. The Uniflo series is compatible with most organic solvents, aqueous solutions, and biological samples, minimizing sample loss while maximizing recovery. Each filter undergoes stringent quality control to guarantee lot-to-lot consistency, reducing the risk of cross-contamination. The luer-lock design ensures a secure fit with standard syringes, preventing leaks during high-pressure applications. Whether used for protein filtration, solvent clarification, or environmental testing, Whatman Uniflo filters deliver reliable, reproducible results with minimal hold-up volume. Their color-coded housing simplifies membrane identification, while the pre-sterilized packaging ensures readiness for immediate use in critical applications. Trusted by researchers worldwide, these filters combine durability with precision, providing an essential tool for laboratories demanding accuracy and efficiency in sample processing.

FAQs

1. What is the difference between 0.22?m and 0.45?m Whatman Uniflo syringe filters?

The 0.22?m filters are designed for sterilization and removal of bacteria, mycoplasma, and fine particulates, while 0.45?m filters are ideal for general clarification, removing larger particles and aggregates. Choose based on your sample?s particle size and filtration goals.

2. Are Whatman Uniflo syringe filters compatible with organic solvents?

Yes, but compatibility depends on the membrane material. PTFE and PVDF membranes are highly resistant to organic solvents, while Nylon and PES are better suited for aqueous solutions. Always check the chemical compatibility chart for your specific solvent.

3. Can these filters be autoclaved for reuse?

No, Whatman Uniflo syringe filters are designed for single-use applications. Autoclaving may compromise the membrane integrity, housing, or sterility, leading to inconsistent filtration performance.

4. How should I store unused Whatman Uniflo syringe filters?

Store filters in their original packaging at room temperature, away from direct sunlight, moisture, and extreme temperatures. Avoid exposure to volatile chemicals or vapors that could degrade the membrane.

5. What alternatives are available if I need a higher flow rate?

For higher flow rates, consider filters with larger diameters (e.g., 25mm or 30mm) or membranes with lower protein-binding properties, such as PES or hydrophilic PTFE. Pre-filtration with a coarser filter may also improve throughput.