Syringe Filters PTFE Hydrophobic 0.22um 25mm 50 Pack – KS Tek

Description

Product Overview

The KS‑Tek syringe filters are engineered for high‑performance liquid handling in demanding laboratory environments. Each filter incorporates a PTFE hydrophobic membrane that delivers a precise 0.22 µm pore size, ensuring the removal of sub‑micron particles while maintaining chemical compatibility with a broad range of solvents. The 25 mm diameter housing provides a standard fit for most syringe models, and the pack of 50 units offers a cost‑effective solution for routine workflows. The filters are non‑sterile, making them ideal for applications where sterility is not a critical requirement, such as routine solvent purification, sample preparation, and method development. Their robust construction resists chemical attack from strong acids, bases, and organic solvents, extending filter life and reducing the frequency of replacements.

Usage

These syringe filters excel in a variety of laboratory scenarios. Researchers performing high‑performance liquid chromatography (HPLC) can rely on the consistent particle retention to protect column integrity and improve reproducibility. In analytical chemistry, the filters are suitable for preparing samples that contain viscous or highly reactive solvents, such as dimethyl sulfoxide, acetonitrile, or strong mineral acids. The hydrophobic PTFE membrane also excels in separating aqueous phases from organic extracts, making it a versatile tool for sample cleanup prior to spectroscopic analysis. Because the filters are compatible with both standard and low‑volume syringes, they serve well in automated sampling systems, manual pipetting, and handheld syringe applications. The 50‑piece packaging ensures that laboratories can maintain a ready stock for high‑throughput projects without worrying about inventory shortages.

Why Choose Us

KS‑Tek has a long history of delivering reliable filtration components to scientific and industrial markets. Our syringe filters undergo rigorous quality control testing, including pressure resistance, leak testing, and pore size verification, to guarantee consistent performance across every batch. The PTFE membrane is sourced from reputable manufacturers and is certified to meet ISO standards for chemical resistance and dimensional stability. In addition to product quality, KS‑Tek provides responsive technical support, offering guidance on filter selection, compatibility questions, and troubleshooting. Our commitment to sustainability is reflected in the recyclable packaging and the long service life of each filter, reducing waste and operational costs for our customers. When you choose KS‑Tek, you benefit from a combination of proven engineering, dependable supply chain, and a customer‑centric approach that prioritizes your laboratory’s success.

Key Features

• Precise 0.22 µm PTFE membrane removes sub‑micron particles for cleaner samples.
• Hydrophobic surface resists water breakthrough, ideal for organic solvent filtration.
• Standard 25 mm diameter fits most laboratory syringes, simplifying integration.
• Non‑sterile design offers a cost‑effective solution for routine solvent purification.
• Dedicated technical support and fast replacement parts ensure minimal downtime.

FAQ

What solvents are compatible with these PTFE syringe filters?

The PTFE membrane is chemically inert to a wide range of solvents, including organic solvents such as acetonitrile, methanol, dichloromethane, and dimethyl sulfoxide, as well as strong acids like hydrochloric acid and strong bases such as sodium hydroxide. This broad compatibility makes the filters suitable for most laboratory purification tasks.

Can these filters be used for sterile applications?

These particular filters are marketed as non‑sterile, meaning they are not manufactured under aseptic conditions. For applications requiring sterility, such as cell culture media preparation or microbiological assays, a sterile‑rated filter should be selected. However, for chemical purification and analytical sample preparation where sterility is not a factor, the non‑sterile version provides excellent performance at a lower cost.

How do I know if the 0.22 µm pore size is appropriate for my method?

A 0.22 µm pore size is commonly used to remove fine particulate matter and prevent column clogging in HPLC and UHPLC systems. If your method is sensitive to particles larger than 0.45 µm, the 0.22 µm filter offers an added safety margin. For applications where higher flow rates are required, you may consider a larger pore size, but the 0.22 µm filter provides a good balance between filtration efficiency and pressure drop.

What is the recommended maximum pressure for these filters?

KS‑Tek syringe filters are rated for a maximum operating pressure of 4 bar (≈58 psi) when used with compatible solvents. Exceeding this pressure may cause membrane rupture or leakage. It is advisable to monitor pressure during high‑flow applications and to follow the manufacturer’s guidelines for each solvent system.

How should I store the filters to maintain their performance?

Store the filters in a cool, dry environment away from direct sunlight and strong chemical vapors. The packaging is designed to protect the PTFE membrane from moisture and contamination. Keeping the filters in their original sealed containers until use helps preserve the membrane’s hydrophobic properties and ensures consistent performance.