Glass Fiber Filters and Prefilters

Glass filters and pre-filters for contamination analysis, liquid clarification, and collection of suspended solids; available in with or without binders and in a range of grades for fine particle filtration.

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Fisherbrand™ Glass Fiber Circles

Faster flow, higher retention than cellulose filters

Pricing and Availability
Specifications

Flow Rate	Fast
Temperature (English) Max.	932°F
Temperature (Metric) Max	500°C
Material	Glass Fiber
Autoclavable	Autoclavable

Cytiva Whatman™ Binder-Free Glass Microfiber Filters GF/F Circles

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.

Pricing and Availability
Specifications

Particle Retention	0.7 μm
Temperature (English) Max.	932°F
Shape	Circle
Description	Whatman Grade GF/F filter from Cytiva's business is manufactured from pure borosilicate glass. GF/F offers very fine particle retention and good loading capacity and flow rate.
Temperature (Metric) Max	500°C
Grade	Grade GF/F
Material	Borosilicate Glass
For Use With (Application)	Recommended for DNA binding and purification.Very effective in filtering finely precipitated proteins.Can be used in conjunction with GF/D as a prefilter for the successful clarification of extremely ‘difficult’ biochemical solutions and fluids and nucl
Thickness (Metric)	420 μm
Flow Rate	19 sec./100mL/in.²
Type	Filter for TCLP Test Use
Format	Disc
Thickness (English)	0.016 in.
Autoclavable	Autoclavable
Waterflow Rate	41 mL/min

Cytiva Whatman™ Binder-Free Glass Microfiber Filters, Grade GF/C

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.

Pricing and Availability
Specifications

Thickness (Metric)	260 μm
Flow Rate	10.5 sec./100 mL
Particle Retention	1.2 μm
Temperature (English) Max.	932°F
Basis Weight	53 g/m²
Shape	Circle
Format	Disc
Description	GE’s Whatman filter paper Grade GF/C glass filters offer a good flow rate and loading capacity that support total suspended solids analysis.
Thickness (English)	0.01 in.
Temperature (Metric) Max	500°C
Grade	Grade GF/C
Material	Borosilicate Glass
Waterflow Rate	105 mL/min

MilliporeSigma™ Glass Fiber Filters Without Binder

Choose from six grades of filters. Glass Fiber Filters without Binders are made of borosilicate microfiber glass. Available in multiple pore sizes and flow rates for a variety of filtration and analysis applications utilizing depth filters. Autoclavable.

Pricing and Availability
Specifications

Pore Size	0.7 μm
Type	Filter Membranes
Color	White
Filter Type	Depth Filter
Surface Type	Plain

MilliporeSigma™ Glass Fiber Filters Without Binder, 1 μm

Hydrophilic Glass Fiber without Binder Resin filter

Pricing and Availability
Specifications

Thickness (Metric)	700 μm
Wettability	Hydrophilic
Type	Filter Membranes
Temperature (Metric) Max	500°C
Color	White
Grade	APFB
Filter Type	Depth Filter
Surface Type	Plain
Autoclavable	Autoclavable
Sterility	Sterile

Cytiva Whatman™ Binder-Free Glass Microfiber Filters, Grade 934-AH Circles

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.

Pricing and Availability
Specifications

Particle Retention	1.5 μm
Temperature (English) Max.	932°F
Shape	Circle
Description	Whatman Grade 934-AH borosilicate glass microfiber filters from GE are smooth water quality filters with high retention efficiency. Grade 934-AH filters are often used in total suspended solids analysis.
Filtration Time	47 sec./100mL
Quantity	100 Pack
Grade	Grade 934-AH
Material	Borosilicate Glass
Thickness (Metric)	435 μm
Flow Rate	3.7 sec./100mL/in.²
Type	Filter for Total Suspended Solids Analysis
Basis Weight	64 g/m²
Format	Disc
Thickness (English)	0.017 in.
Surface Type	Smooth
Waterflow Rate	341 mL/min

MilliporeSigma™ Filter Support Pads

Reinforce filters or use as spacers between filters. Filter Support Pads are available in absorbant cellulose pads to support filters in monitors or woven Dacron™ mesh spacers designed for use between filters. Available in diameters from 13mm to 124mm.

Pricing and Availability
Specifications

Particle Retention	0.2 to 0.6 μm
Temperature (English) Max.	220°F
Temperature (Metric) Max	105°C
Color	White
Quantity	100Pack.
Grade	AP10
Material	Cellulose Fiber
Hydrophobicity	Hydrophilic
For Use With (Application)	Used as filter supports in Millipore™ monitors for contamination analysis for drying filters
Thickness (Metric)	0.8 to 1 mm
Flow Rate	5.8 mL/minx cm²
Wettability	Hydrophilic
Thickness (English)	0.031 to 0.039 in.
Filter Type	Depth Filter
Surface Type	Plain

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Sartorius Glass Fiber (GF) Pre-filters, No Binder

Use in gravimetric analyses and as a depth filter for sterile filtration. Sartorius Glass Fiber (GF) Pre-filters, No Binder are made of borosilicate glass microfibers and combine fast flow rates with high load capacity. Ideal for relatively clean solutions, as it retains very fine particles.

Pricing and Availability

Cytiva Whatman™ Binder-Free Glass Microfiber Filters, Grade GF/A

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.

Pricing and Availability
Specifications

Particle Retention	1.6 μm
Temperature (English) Max.	932°F
Shape	Circle
Description	GE’s Whatman Grade GF/A glass microfiber filters feature fine retention. GF/A filters are suitable for water quality parameter measurement and air filtration applications.
Temperature (Metric) Max	500°C
Quantity	100 Pieces
Grade	Grade GF/A
Material	Borosilicate Glass
For Use With (Application)	Used for high-efficiency general purpose laboratory filtration, including water pollution monitoring of effluents, for filtration of water, foodstuff analyses, protein filtration, and radioimmunoassay of weak β emitters.
Thickness (Metric)	260 μm
Flow Rate	13 sec./100mL
Type	Fine Retention Filter
Format	Disc
Thickness (English)	0.01 in.
Waterflow Rate	143 mL/min

Cytiva Whatman™ Binder-Free Glass Microfiber Filters, Grade GF/B

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

Pricing and Availability
Specifications

Thickness (Metric)	675 μm
Flow Rate	5.5 sec./100mL
Particle Retention	1.0 μm
Type	Filter
Temperature (English) Max.	932°F
Basis Weight	143 g/m²
Format	Disc
Description	GE’s Whatman brand Grade GF/B is a thick filter with fine particle filter and good loading capacity. GF/B filters are particularly useful for liquid clarification and liquid scintillation counting.
Thickness (English)	0.02 in.
Temperature (Metric) Max	500°C
Grade	Grade GF/B
Material	Borosilicate Glass
Waterflow Rate	81 mL/min

MilliporeSigma™ Glass Fiber Filters with Binder, 1 μm

For prefiltration and contamination analysis

Pricing and Availability
Specifications

Pore Size	1 μm
Particle Retention	0.2 to 0.6 μm
Temperature (English) Max.	1022°F
Airflow Rate	10.6 L/min/ cm²
Air Resistance	210 mm of H₂O
Temperature (Metric) Max	550°C
Color	White
Grade	AP15
Material	Borosilicate Glass Microfiber
Hydrophobicity	Hydrophilic
For Use With (Application)	Prefiltration and contamination analysis
Sterility	Sterile
Thickness (Metric)	790 μm
Includes	Binder resin
Flow Rate	1.6 mL/min/ cm²
Wettability	Hydrophilic
Type	Filter Membranes
Thickness (English)	0.031 in.
Protein Binding Capacity	100 μg/ cm²
Filter Type	Depth Filter
Surface Type	Plain
Autoclavable	Autoclavable

MilliporeSigma™ Reinforced Membrane Filters

Contain no asbestos or fiberglass; made from non-shedding materials.

Pricing and Availability
Specifications

Pore Size	0.5 μm
Temperature (English) Max.	158°F
Temperature (Metric) Max	70°C
Color	White
Material	Polymers of Cellulose Ester
Hydrophobicity	Hydrophilic
Sterility	Sterile
Thickness (Metric)	200 μm
Wettability	Hydrophilic
Type	Filter Membranes
Thickness (English)	0.007 in.
Filter Type	Screen Filter
Surface Type	Plain
Autoclavable	Autoclavable

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Sartorius Glass Fiber (GF) Pre-filters

Use as a depth filter for larger totally filterable volumes. Sartorius Glass Fiber (GF) Pre-filters are made of borosilicate glass microfibers and are ideal for use as a pre-filter in clarification and sterile filtration. Available in a range of filter disc diameters.

Pricing and Availability
Specifications

Particle Retention	2.6 μm
Temperature (English) Max.	428°F
Temperature (Metric) Max	220°C
Color	White
Grade	13400
Material	Borosilicate Glass Microfiber
Hydrophobicity	Hydrophilic
For Use With (Application)	Used as a depth prefilter high particle loading capacity
Sterility	Non-sterile
Thickness (Metric)	550 μm
Flow Rate	295 to 381mL/min.
Format	Disc
For Use With (Equipment)	Filtration Systems
Autoclavable	Autoclavable

Cytiva™ Whatman™ Grade GF/F Glass Microfiber Filters, Binder-free

Binder-free borosilicate glass microfiber filter used for DNA purification, protein precipitation, and landfill leachate toxicity testing.

Pricing and Availability

Cytiva Whatman™ Binder-Free Glass Microfiber Filters, Grade GF/B Sheets

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.

Pricing and Availability
Specifications

Thickness (Metric)	675 μm
Flow Rate	5.5 sec./100 mL
Type	Filter
Temperature (English) Max.	932°F
Basis Weight	143 g/m²
Format	Sheet
Thickness (English)	0.02 in.
Temperature (Metric) Max	500°C
Material	Borosilicate Glass

Glass Fiber Filters and Prefilters

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