Filtry z włókna szklanego GF/A, bez lepiszcza
Filtry z mikrowłókna szklanego GF/A charakteryzują się retencją drobych cząstek. Przeznaczone są do analizy parametrów jakościowych wody oraz w filtracji powietrza.
Whatman™ Grade GF/A glass microfiber filters feature fine retention. GF/A filters are suitable for water quality parameter measurement and air filtration applications.

• Suitable for a wide range of liquid and air filtration applications
• Nominal particle retention of 1.6 µm

We offer a variety of binder-free glass microfiber filters for different sample types and analysis needs. For higher wet strength, increased loading capacity, or different particle retention, see other Whatman™ binder-free filter options.

Whatman™ glass microfiber filters without binder
Filters that combine high loading capacity with fine particle retention are well suited for applications such as water quality parameter measurements involving large sample volumes. Grade GF/A filters can function as wastewater filters or serve as filters in the following applications:

• Water pollution monitoring of effluents
• Foodstuff analysis
• Radioimmunoassay of weak β emitters
• Gravimetric determination of airborne particulates
• Stack sampling and absorption methods of air pollution monitoring
Filtry z włókna szklanego GF/A, bez lepiszcza
Filtry z włókna szklanego GF/A, bez lepiszcza
Filtry z włókna szklanego GF/A, bez lepiszcza
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 ? emitters. 
Grade Grade GF/A 
Nominal Air Flow Rate 4.3 s/100 ml/in2 
Nominal Thickness 260 µm
Basis Weight 53 g/m2
Nominal Basis Weight 53 g/m2
Max recommended temperature 550 °C 
Material Borosilicate glass 
Binder Type Binder Free 
Typical Particle Retention in Liquid 1.6 µm 
Typical water flow rate 143 ml/min 
Product Product Name Dimensions  Pack size
1820-021 Grade GF/A Fine Retention Filter; 21 mm circle (100 pcs) fi 21 mm 100 pieces
1820-024 Grade GF/A Fine Retention Filter; 24 mm circle (100 pcs) fi 24 mm 100 pieces
1820-025 Grade GF/A Fine Retention Filter; 25 mm circle (100 pcs) fi 25 mm 100 pieces
1820-037 Grade GF/A Fine Retention Filter; 37 mm circle (100 pcs) fi 37 mm 100 pieces
1820-042 Grade GF/A Fine Retention Filter; 42.5 mm circle (100 pcs) fi 42.5 mm 100 pieces
1820-047 Grade GF/A Fine Retention Filter; 47 mm circle (100 pcs) fi 47 mm 100 pieces
1820-050 Grade GF/A Fine Retention Filter; 50 mm circle (100 pcs) fi 50 mm 100 pieces
1820-055 Grade GF/A Fine Retention Filter; 55 mm circle (100 pcs) fi 55 mm 100 pieces
1820-060 Grade GF/A Fine Retention Filter; 60 mm circle (100 pcs) fi 60 mm 100 pieces
1820-061 Grade GF/A Fine Retention Filter with Reinforced Rim; 60 mm circle (50 pcs) fi 60 mm 50 pieces
1820-070 Grade GF/A Fine Retention Filter; 70 mm circle (100 pcs) fi 70 mm 100 pieces
1820-090 Grade GF/A Fine Retention Filter; 90 mm circle (100 pcs) fi 90 mm 100 pieces
1820-110 Grade GF/A Fine Retention Filter; 110 mm circle (100 pcs) fi 110 mm 100 pieces
1820-125 Grade GF/A Fine Retention Filter; 125 mm circle (100 pcs) fi 125 mm 100 pieces
1820-150 Grade GF/A Fine Retention Filter; 150 mm circle (100 pcs) fi 150 mm 100 pieces
1820-240 Grade GF/A Fine Retention Filter; 240 mm circle (100 pcs) fi 240 mm 100 pieces
1820-6537 Grade GF/A Fine Retention Filter; 81 mm circle (100 pcs) fi 81 mm 100 pieces
1820-8013 Grade GF/A Fine Retention Filter; 13 mm circle (100 pcs) fi 13 mm 100 pieces
1820-866 Grade GF/A Fine Retention Filter; 8 × 10 in (100 pcs) 8 x 10 in 100 pieces
1820-915 Grade GF/A Fine Retention Filter; 460 × 570 mm (25 pcs) 460 x 570 mm (18.11 x 22.44 in) 25 pieces