GE Whatman® Grade GF/F Binder-Free Glass Microfiber Filters

Whatman Grade GF/F filter from GE Healthcares Life Sciences business is manufactured from pure borosilicate glass. GF/F offers very fine particle retention and good loading capacity and flow rate. Glass microfiber filters provide reliable results in a variety of critical filtration procedures. 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 nucleic acids. Highly suitable for use in applications involving air filtration and for gravimetric analysis of volatile materials where ignition is involved. 0.7 µm nominal particle retention.

Glass fiber TCLP test filters served as the basis filter for EPA standard for the toxicity characteristic leaching procedure. When the U.S. Environmental Protection Agency (EPA) Toxicity Characteristic Leaching Procedure 1311 was developed, it recommended using the Whatman Grade GF/F filter. Grade GF/F remains a popular and prominent component for measuring landfill leachate composition with a TCLP test. Other applications include:
• DNA binding and purification
• Filtering finely precipitated proteins
• Filtering biochemical solutions, fluids, and nucleic acids

Specifications:
• Grade: Grade GF/F
• Nominal air flow rate: 19 s/100 mL/in.²
• Nominal thickness: 420 µm
• Nominal basis weight: 75 g/m²
• Max. recommended temperature 550°C
• Material: Borosilicate glass
• Binder type: Binder-free
• Typical particle retention in liquid††: 0.7 µm
• Typical water flow rate†: 41 mL/min.

†Particle retention rating at 98% efficiency.
††Normalized for 9 cm diameter. Measured under gravity for comparative purposes
Image(s) are representative of the product group and not necessarily the individual product.

Circles
Size (mm): 15

Circles
Size (mm): 21

Circles
Size (mm): 24

Circles
Size (mm): 25

Circles
Size (mm): 37

Circles
Size (mm): 42.5

Circles
Size (mm): 47

Circles
Size (mm): 55

Circles
Size (mm): 70

Circles
Size (mm): 90

Circles
Size (mm): 110

Circles
Size (mm): 125

Circles
Size (mm): 142

Circles
Size (mm): 150

Circles
Size (mm): 257

Circles
Size (mm): 293

Sheets
Size (mm): 460 x 570