Specifications Table

Product Name – Whatman TE38 Membrane Filter
Quantity/Pack Size – 100MM,5uM (Pack of 25) | 150MM,5uM (Pack of 25) | 37MM,5uM (Pack of 50) | 47MM,5uM (Pack of 50) | 50MM,5uM (Pack of 50) | 90MM,5uM (Pack of 25)
Form – Membrane Disc
Grade – Laboratory Grade
Application – Hydrophobic filtration, solvent clarification, air/gas filtration

Product Overview

The Whatman TE38 Membrane Filter is engineered for superior performance in demanding laboratory filtration tasks. Constructed from pure polytetrafluoroethylene (PTFE), this hydrophobic membrane offers exceptional chemical resistance and thermal stability, making it ideal for filtering aggressive solvents, corrosive gases, and aqueous solutions. With a precise 5-micron pore size, it ensures efficient particle retention while maintaining high flow rates. The TE38’s inherent hydrophobicity prevents water absorption, allowing it to remain effective even in high-moisture environments. Its uniform pore structure guarantees consistent filtration results across all applications. The membrane’s robust construction resists deformation under pressure, ensuring long-lasting performance in critical filtration processes. Available in multiple diameters to accommodate various filtration setups, this filter maintains its integrity across a wide pH range (0-14), making it versatile for diverse laboratory protocols. The TE38’s low extractables profile minimizes sample contamination, while its smooth surface facilitates easy particle release during analysis. This filter represents the gold standard for applications requiring absolute chemical compatibility and reliable particle retention.

FAQs

1. What is the maximum operating temperature for Whatman TE38 filters?

These PTFE membrane filters can withstand continuous operation at temperatures up to 260?C, with short-term exposure possible up to 300?C. The high thermal stability makes them suitable for sterilization processes and high-temperature filtration applications.

2. Can TE38 filters be used with organic solvents?

Yes, the PTFE construction provides excellent resistance to virtually all organic solvents, including aggressive chemicals like dimethylformamide, tetrahydrofuran, and concentrated acids. This chemical inertness prevents filter degradation during solvent filtration processes.

3. How does the hydrophobic nature affect filtration performance?

The hydrophobic surface repels water while allowing gases and organic solvents to pass through. This property is particularly useful for air venting applications, solvent filtration, and processes where water contamination must be prevented in the filtrate.

4. What sterilization methods are compatible with these filters?

TE38 filters can be sterilized using autoclaving (121?C), ethylene oxide gas, or gamma irradiation. The PTFE material maintains its structural integrity and filtration properties through multiple sterilization cycles, making them reusable in many applications.

5. Are there any special storage requirements for these filters?

Store the filters in their original packaging at room temperature, away from direct sunlight and moisture. The hydrophobic nature means they don’t require special humidity control, but keeping them in sealed containers prevents contamination from airborne particles.