Ahlstrom Grade 609 Filter Paper 32 cm for Medium-Fine Laboratory Filtration (100 Sheets)

Qualitative Filter Paper Wet‑Strengthened — Grade 962, 27 cm, Fast Filtration

This high‑performance qualitative filter paper, Grade 962, is designed for rapid separation and reliable wet‑strengthened performance. Its engineered structure ensures efficient liquid flow while retaining particles, making it suitable for a wide range of laboratory filtration needs.

Filter papers like Grade 962 are often referenced in analytical chemistry methods for routine qualitative separations and sample clarification. Research and industry protocols cite wet‑strengthened papers for their durability in filtration of aqueous samples and compatibility with standard laboratory procedures. Peer reviews and customer feedback highlight its consistent porosity and strength even when handling moist precipitates. Users commonly employ this grade for coarse precipitate filtration, environmental sample processing, and preparative work, with many noting its dependable performance and ease of use in routine lab workflows.

This fast filtering grade is a thinner version of Grade 961 and is recommended for the filtration of coarse and gelatinous precipitates. The creped surface of Grade 962 also offers higher surface area to maintain high filtration speed.

Key Specifications

• Size: 27 cm
• Pore Size: 27 µm
• Package Quantity: 100 sheets

Product Details

Grade 962 qualitative filter paper features a wet‑strengthened matrix that resists tearing and deformation during use, especially in applications involving higher moisture content. Its fast filtration characteristic helps reduce processing time in busy laboratory environments.

Performance and Applications

With a pore size around 27 µm, this filter paper is ideal for capturing larger particulates and gelatinous residues. Laboratories use it for tasks such as vacuum or gravity filtration of coarse precipitates, soil suspensions, and food or beverage quality checks where rapid throughput is needed.

Quality and Compliance

Produced under controlled manufacturing standards, this filter paper is suitable for routine qualitative analysis. Its consistent thickness and pore distribution support reproducible results across multiple filtrations.

To support your laboratory filtration and sample preparation workflows beyond the Filter Paper Grade #609 32 cm — a standard qualitative Ahlstrom filter paper with ~4 µm retention for routine gravity and creped filtration tasks  — consider other pleated and qualitative filter media that enhance separation efficiency and expand particle‑retention options.

The Filter Paper Grade #515 32 cm (100) offers a fast‑flow pre‑pleated design with ~25 µm pore size ideal for viscous material filtration and construction‑related applications. For broader qualitative filtration needs where thicker, wet‑strengthened media are required, the Filter Paper Grade #962 32 cm provides a fast‑speed qualitative option with larger pore structure suited to coarse precipitate removal and general laboratory separations.

Q&A

What is the main difference between Grade 962 and Grade 961 filter papers?

Grade 962 is a thinner, fast‑filtering variant of Grade 961 with a similar pore structure but optimized for quicker flow and easier handling of coarse precipitates.

Can this filter paper be used for quantitative analysis?

Grade 962 is primarily designed for qualitative filtration. For quantitative precipitate collection, other specialized papers or methods may be preferable depending on the analytical requirements.

Is this filter paper suitable for vacuum filtration?

Yes, the wet‑strengthened Grade 962 can be used in both gravity and vacuum filtration setups, especially when filtering coarse or gelatinous materials.