Specifications Table

Product Name – Whatman Polydisc Filter GW
Quantity/Pack Size – Pack of 20 | Pack of 50
Form – Disc Filters
Grade – Analytical
Application – Clarification, Sterilization, Sample Prep

Product Overview

Whatman Polydisc GW 0.45?M filters are engineered with pure borosilicate glass microfiber for superior particulate retention and chemical compatibility. The 0.45-micron pore size ensures efficient removal of fine particles, bacteria, and contaminants while maintaining high flow rates. These filters are ideal for applications requiring sterile filtration, sample preparation, or clarification of aggressive solvents and aqueous solutions. The glass microfiber matrix provides exceptional mechanical strength and thermal stability, making them suitable for both gravity and vacuum filtration setups. Each filter undergoes rigorous quality control to guarantee consistency in performance, with low extractables to prevent sample contamination. The hydrophobic nature of the glass fiber ensures minimal binding of proteins or nucleic acids, preserving sample integrity. Whether used in research, analytical testing, or routine lab procedures, these filters deliver reliable, reproducible results with minimal maintenance. Their compatibility with standard filtration apparatus and autoclavability further enhance their versatility in demanding laboratory environments.

FAQs

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

These filters can withstand continuous operation up to 500?C, making them suitable for high-temperature applications and sterilization processes.

2. Are these filters compatible with organic solvents like acetone or methanol?

The glass microfiber construction provides excellent resistance to most organic solvents, acids, and alkalis, ensuring stable performance across diverse chemical environments.

3. How should I store unused Whatman Polydisc GW filters?

Store the filters in their original packaging in a cool, dry place away from direct sunlight and moisture to maintain their sterility and filtration efficiency.

4. Can these filters be autoclaved before use?

Yes, Whatman Polydisc GW filters are autoclavable at 121?C for 20 minutes, allowing for pre-sterilization without compromising their structural integrity or performance.

5. What alternatives exist if I need a different pore size?

For coarser filtration, consider Whatman GF/A (1.6?M) or GF/B (1.0?M) filters, while GF/F (0.7?M) offers finer retention than the 0.45?M GW variant.