This grade filter paper offers fine particle retention and high flow rate, as well as good loading capacity.

• Used for high-efficiency general purpose laboratory filtration, including water pollution monitoring of effluents, for filtration of water,algae and bacteria cultures, food stuff analyses, protein filtration, and radioimmunoassay of weak ß emitters.

• Recommended for gravimetric determination of airborne particulates, stack sampling, and absorption methods of air pollution monitoring.
• Grade GF/A card-mounted filters are used in static sample and personal air sampler applications. These aerosol samplingand particulate monitoring filters provide high flow rates and minimal sample interference.

• Three times thicker than GF/A with higher wet strength and significantly increased loading capacity.
• Combines fine particle retention with good flow rate. Particularly useful where liquid clarification or solids quantification is required for heavily-loaded, fine particulate suspensions.

• Can be used as a finely retentive membrane prefilter. Used in LSC techniques where high loading capacity is required.

• Combines fine particle retention with good flow rate.
• The standard filter in many parts of the world for the collection of suspended solids in potable water and natural and industrial wastes.
• Widely used for cell harvesting, liquid scintillation counting, and binding assays where more loading capacity is required.

• Considerably faster in flow rate and overall filtration speed than cellulose filter papers of similar particle retention. The filter is thick and consequently exhibits a high loading capacity. Designed as a membrane prefilter and available in sizes to fit most holders.
• GF/D will provide good protection for finely retentive membranes.
• Can be used in combination with GF/B to provide very efficient graded prefilter protection for membranes.

• This high-efficiency filter will retain fine particles down to 0.7 μm. Unlike membrane filters with a comparable retention value, it has a very rapid flow rate and an extremely high loading capacity.
• Because of the tight specification of 0.6 μm—0.8 μm particle retention and pure borosilicate glass structure, GF/F is the material upon which the EPA Method TCLP 1311 for Toxicity Characteristic Leaching Procedure was developed.

The fine particle retention of this popular grade is superior for its high retention efficiency at high flow rates and its high loading capacity. This is a smooth surface, high retention borosilicate glass microfiber filter, which has been pre-fired and withstands temperatures over 550°C. Grade 934-AH™ is used for a wide range of laboratory applications.

• Used for determining total suspended solids in water, removal of turbidity, and filtration of bacterial cultures.
• Recommended for water pollution monitoring, cell harvesting, liquid scintillation counting, and air pollution monitoring.

 EPM 2000 has been selected by the U.S. Environmental Protection Agency (EPA) for use in high volume air sampling equipment that collects atmospheric particulates and aerosols. It is manufactured from 100% pure borosilicate glass of special purity, and pre-fired to enable the detailed chemical analysis of trace pollutants with the minimum of interference or background