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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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 & Availability
Specifications

Thickness (Metric)	260 μm
Flow Rate	10.5 sec./100mL
Particle Retention	1.2μm
Temperature (English) Max.	932°F
Basis Weight	53 g/m²
Shape	Circle
Format	Circle
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

Cytiva Whatman Grade 934-AH RTU Glass Microfiber Filters, Ready to Use

Ready to use, Grade 934-AH RTU Glass Microfiber Filter Papers are the time-saving version of GE’s 934-AH glass microfiber filter papers, which are widely used for total suspended solids analysis.

Pricing & Availability
Specifications

Particle Retention	1.5μm
Description	Our Whatman glass microfiber filter papers in grade 934-AH RTU have been pre-washed, dried (or ignited), cooled, desiccated and weighed, which eliminates the pre-treating steps that are otherwise required by the US EPA Laboratory Standard Method 2540 part
Quantity	100
Grade	934-AH RTU
Material	Glass Microfiber
Autoclavable	Not Autoclavable
Sterility	Non-sterile
Waterflow Rate	341 mL/min

Cytiva Whatman™ Glass Microfiber Prefilter, 2μm Particle Retention Rating

Multilayer graded density filters for rapid and efficient filtration of samples with high solids content. Whatman™ Glass Microfiber Prefilters are designed with a coarse glass filter top layer (10μm) meshed with a finer layer. The multigrade glass filter traps larger particles in its pores of the coarse layer, medium-sized particles in the interface meshing, and smaller particles in the interstices of the fine layer.

Pricing & Availability
Specifications

Particle Retention	>2μm
Temperature (English) Max.	932°F
Shape	Circle
Description	GE’s Whatman GMF 150 prefilters are multilayer graded density filters for rapid and efficient filtration of samples with high solids content.
Airflow Rate	1.5 s/100 ml/1.56 cm²
Temperature (Metric) Max	500°C
Quantity	40/pack
Grade	Grade GMF 150
Material	Borosilicate Glass
For Use With (Application)	Prefilter with high loading capacity and good flow rates.
Thickness (Metric)	750 μm
Flow Rate	1.5 sec./100mL/1.56cm²
Type	Prefilter
Format	Circle
Thickness (English)	0.029 in.
Waterflow Rate	887 mL/min

Cytiva Whatman™ Glass Fiber Filter Papers - Grade 31

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

Pricing & Availability

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 & Availability
Specifications

Particle Retention	0.7μm
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	Circle
Thickness (English)	0.016 in.
Autoclavable	Autoclavable
Waterflow Rate	41 mL/min

Cytiva Whatman™ 934-AH RTU Glass Microfiber Filters

Fast and convenient

Pricing & Availability
Specifications

Thickness (Metric)	435 μm
Flow Rate	47 sec./100mL
Particle Retention	1.5μm
Type	RTU Filter for Total Suspended Solids Analysis
Temperature (English) Max.	1022°F
Description	Our Whatman glass microfiber filter papers in grade 934-AH RTU have been pre-washed, dried (or ignited), cooled, desiccated and weighed, which eliminates the pre-treating steps that are otherwise required by the US EPA Laboratory Standard Method 2540 part
Thickness (English)	0.017 in.
Temperature (Metric) Max	550°C
Quantity	100 pieces
Grade	934-AH RTU
Material	Borosilicate Glass
For Use With (Application)	Monitoring of rivers, lakes and coastal waters
Waterflow Rate	341 mL/min

Cytiva Whatman™ Acid-Treated Low-Metal TCLP Filters

Binder free filters

Pricing & Availability
Specifications

Thickness (Metric)	420 μm
Particle Retention	0.7μm
Type	TCLP Limits Test Filter
Shape	Circle
Format	Circle
Description	GE’s Whatman TCLP test filters are acid-treated with low metal content. They support TCLP testing by providing accurate information about TCLP limits to ensure the best possible disposal plan can be put into action.
Material	Borosilicate Glass
Waterflow Rate	60 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 & Availability
Specifications

Thickness (Metric)	675 μm
Flow Rate	5.5 sec./100mL
Particle Retention	1.0μm
Type	Filter
Temperature (English) Max.	932°F
Basis Weight	143 g/m²
Format	Circle
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

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 & Availability
Specifications

Particle Retention	1.6μm
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	Circle
Thickness (English)	0.01 in.
Waterflow Rate	143 mL/min

Cytiva Whatman™ Grade 934-AH RTU Glass Microfiber Filters, Ready to Use

Widely used for total suspended solids analysis.

Pricing & Availability

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 & Availability
Specifications

Particle Retention	1.5μm
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	Circle
Thickness (English)	0.017 in.
Surface Type	Smooth
Waterflow Rate	341 mL/min

Cytiva Whatman™ Binder-Free Glass Microfiber Prefiters, Grade GF/D

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.

Pricing & Availability
Specifications

Particle Retention	2.7μm
Temperature (English) Max.	932°F
Shape	Circle
Description	GE’s Whatman Grade GF/D fine membrane filters are thick and offer good loading capacity. GF/D can also function as a prefilter when used with GF/B, and it comes in many sizes to fit most filter holders.
Temperature (Metric) Max	500°C
Grade	Grade GF/D
Material	Borosilicate Glass
Thickness (Metric)	675 μm
Flow Rate	2.6 s/100mL/in²
Type	Prefilter
Basis Weight	121 g/m²
Format	Circle
Thickness (English)	0.02 in.
Autoclavable	Autoclavable
Waterflow Rate	681 mL/min