Fiberglass filter papers -

Fibreglass filter papers Whatman

• Made from 100% borosilicate glass
• Chemically inert
• Completely free of binders
• In-depth filtering
• High flow
• High loading capacity
• Retention of particles less than one micron
• Resists temperatures up to 500 °C
• Ideal material for hot gas filtration or gravimetric analysis of volatile materials from combustion
• Fine capillary structure with high water absorption, suitable for spot tests or liquid scintillation counting methods

Glass fibre filter papers for solids analysis

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filters to determine the level of total suspended solids (TSS), dissolved solids or volatile solids.
In addition to the GF/C™ membranes that comply with the EN872 standard, a new Whatman 934-AH™
membrane is available in two versions:
934 AH: complies with the 2540D method - glass fibre 1.5 µm
934 RTU: complies with the 2540D method in a ready-to-use version with a pre-weighed cup and filter

Glass microfibre filters

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Filters used for pre-filtration to protect a microfiltration membrane during the filtration of fooling solutions. These glass microfibre filters are characterised by a substantial thickness, providing high capacity retention of particles throughout the thickness.

The AP15, AP20, AP25 type filters have an acrylic binding resin in order to avoid the release of fibres during filtration. However, the AP40 type is not binding, ie it complies with all the analysis norms such as the determination of suspended solids in water, air analysis.

Glass microfiber filter sheets

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• 100% pure glass filters without any binder
• High flow rate, especially suitable for microfiltration
• For numerous application (water, algae, solvents, HPLC samples and protein filtration, purification, ligand binding testing, soil testing, suspended matters, cells harvesting
• Fine particle retention (pore size: 0.7 µm to 2.7 µm)
• High loading capacity
• High level of chemical purity (manufactured with demineralised water)
• Non-hygroscopic, biologically inert
• Chemical resistance to most of solvents and reagents (except hydrofluoric acid)
• Temperature resistance up to 500 °C