Description
Specifications Table
Product Name – Whatman Grade GF92 Glass Microfibre Filter
Quantity/Pack Size – 42MM (Pack of 200), 47MM (Pack of 200), 50MM (Pack of 200), 100MM (Pack of 100), 135MM (Pack of 100), 142MM (Pack of 100)
Form – Circular Discs
Grade – GF92
Application – Air monitoring, gravimetric analysis, particulate collection
Product Overview
The Whatman Grade GF92 Glass Microfibre Filter is engineered for high-performance filtration in demanding laboratory applications. Composed of 100% borosilicate glass microfibers, this filter delivers exceptional chemical resistance, making it suitable for use with aggressive solvents, acids, and alkalis. Its uniform fiber distribution ensures consistent particle retention, while the high flow rate minimizes filtration time, improving workflow efficiency. The GF92 grade is particularly valued for its durability and low extractables, which prevent sample contamination and ensure reliable results. The filter?s smooth surface allows for easy handling and reduces the risk of fiber shedding, which is critical for precise gravimetric analysis. Available in multiple diameters, it accommodates a wide range of filtration setups, from small-scale experiments to large-volume processing. Whether used in air pollution monitoring, environmental sampling, or industrial quality control, the Whatman GF92 provides the robustness and consistency required for accurate data collection. Its thermal stability further extends its utility in applications involving high-temperature processes, ensuring versatility across diverse laboratory protocols.
FAQs
1. What is the maximum operating temperature for Whatman GF92 filters?
The Whatman GF92 glass microfibre filter can withstand continuous operation at temperatures up to 500?C, making it suitable for high-temperature applications without compromising structural integrity.
2. Can this filter be used with organic solvents?
Yes, the GF92 filter is highly resistant to organic solvents, including acetone, methanol, and toluene, due to its borosilicate glass composition, which ensures stability and minimal extractables.
3. How does the GF92 compare to cellulose filters in terms of flow rate?
The GF92 offers a significantly higher flow rate than most cellulose filters, reducing filtration time while maintaining efficient particle retention, which is ideal for high-volume or time-sensitive applications.
4. Is pre-treatment required before using these filters for gravimetric analysis?
Pre-treatment, such as drying at 105?C for 1 hour or igniting at 450?C for 30 minutes, is recommended to remove moisture and organic contaminants, ensuring accurate weight measurements in gravimetric analysis.
5. Are these filters compatible with standard filtration apparatus?
The GF92 filters are designed to fit most standard filtration funnels and holders, including Buchner and Hirsch funnels, provided the diameter matches the apparatus specifications.
