Whatman 1827-070 Filter Circles, 70mm Dia, Binder Free Grade 934-AH, 100/pk (PN:1827-070)

Whatman Grade 934-AH filters are widely used in environmental and laboratory filtration applications, particularly for determining total suspended solids (TSS) in water samples, filtering turbid solutions, and collecting particulate matter from liquids. They are also used in applications such as water pollution monitoring, air pollution monitoring, and cell harvesting.

This filter grade provides a nominal particle retention of approximately 1.5 µm, allowing it to efficiently capture fine suspended particles while maintaining fast filtration rates for high-volume sample processing.

The filters are manufactured from high-purity borosilicate glass microfiber without binders, which improves chemical resistance and reduces contamination risk during analytical procedures. The binder-free construction also supports consistent results in sensitive laboratory analyses.

Yes. These glass microfiber filters can tolerate temperatures up to about 550 °C, making them suitable for procedures that require high-temperature drying, ignition, or gravimetric analysis in environmental testing laboratories.

The 70 mm filter circle size fits many standard laboratory filtration holders and funnels. The larger filtration area allows laboratories to process larger sample volumes efficiently, reducing filtration time when working with environmental or industrial liquid samples.