Glass Fiber Filters and Prefilters

Ahlstrom Grade 161 is a binder-free microfiber glass filter that offers finer particle retention and higher flow rate than traditional analytical papers.

Faster flow, higher retention than cellulose filters

Functions as a prefilter when used with GF/B microfiber filters. Whatman™ Binder-Free Glass Microfiber Prefilters, Grade GF/D provide efficient membrane protection, especially during liquid scintillation counting.

Filters fine particles with high wet-strength and high loading capacity. Whatman™ Binder-Free Microfiber Filters, Grade GF/B Sheets are particularly useful for liquid clarification and liquid scintillation counting.

Offers fine particle retention and high flow rate, as well as good loading capacity

Made with 100% borosilicate micro-glass fibers and are binder free. Fisherbrand™ Microglass Fiber Filters are particularly suitable for micro-filtration because of very fine fibers.

Combines high loading capacity with fine particle retention. Whatman™ Binder-Free Glass Microfiber Filters, Grade GF/A are ideal for gravimetric determination of airborne particulates, stack sampling and absorption methods of air pollution monitoring.

Served as the basis filter for EPA standard for the toxicity characteristic leaching procedure. Whatman™ Binder-Free Glass Microfiber Filters GF/F Circles offers an extremely high loading capacity and flow rate.

Made with 100% borosilicate micro-glass fibers. Fisherbrand™ Microglass Fiber Filter Discs are non-hygroscopic and biologically inert. They show chemical resistance to most solvents and reagents (except hydrofluoric acid).

Hydrophilic Glass Fiber without Binder Resin filter

For prefiltration and contamination analysis

For prefiltration and contamination analysis

Designed for analysis of non-filterable residue and materials that require a high loading capacity glass microfiber filter. Whatman™ Binder-Free Glass Microfiber Filters, Grade 934-AH Circles are also used in cell harvesting, liquid scintillation, and monitoring pollution.

Moisture test paper for use when drying samples during moisture assessment

Combines fine particle retention with good flow rate. Whatman™ Binder-Free Glass Microfiber Filters, Grade GF/C are ideal for the collection of suspended solids in potable water, natural and industrial wastes.