Whatman 1825-090 Filter Circles, 90mm Dia, Binder Free Grade GF/F, 25/pk (PN:1825-090)

Whatman GF/F filters are commonly used in laboratory filtration for applications that require fine particle retention with high flow rates. They are frequently used for environmental monitoring, water quality testing, biochemical sample preparation, and filtration of fine precipitates.

The GF/F grade typically provides particle retention around 0.7 µm, allowing it to capture very fine particulates while maintaining efficient filtration speed. This balance of retention and flow makes it suitable for analytical and environmental testing procedures.

These filters are manufactured from pure borosilicate glass microfiber and contain no binders. The binder-free design helps minimize contamination and ensures reliable analytical results in sensitive laboratory procedures.

Binder-free filters reduce the risk of chemical interference or extractables that could affect analytical measurements. This makes them ideal for applications such as environmental analysis, gravimetric testing, and other procedures where sample purity is critical.

GF/F filters are widely used for water and air pollution analysis, retention of analytical precipitates, membrane prefiltration, and biochemical sample clarification. Their high particle loading capacity allows them to filter larger sample volumes without clogging quickly.