Ahlstrom 5620-1250 Pre-Pleated (Fluted) Filter Paper, Grade 562, 125 mm, 100/pk

Ahlstrom Grade 562 filter paper is commonly used for general laboratory filtration, clarification of liquids, and separation of coarse particulate matter. Its relatively large pore size and fast flow rate make it suitable for filtering suspensions, viscous solutions, and samples with high particle loads.

Pre-pleated or fluted filter paper increases the effective filtration surface area, which allows liquids to pass through more quickly and improves particle-holding capacity. This design helps reduce filtration time and prevents clogging when working with samples that contain significant amounts of solids.

Ahlstrom Grade 562 filter paper typically has a pore size of around 27 µm, making it suitable for retaining relatively large particles while maintaining high filtration speed. This balance allows laboratories to process large sample volumes efficiently.

Grade 562 filter paper is designed for high-speed filtration, with a typical Herzberg filtration rate of about 28 seconds per 100 mL. This rapid filtration capability makes it ideal for routine laboratory work where quick sample preparation is important.

The 125 mm diameter fits standard laboratory filtration funnels commonly used in analytical and industrial labs. It is compatible with gravity filtration setups and many routine filtration workflows used in chemical, environmental, and industrial testing laboratories.