Whatman 1820-090 Filter Circles, 90mm Dia, Binder Free Grade GF/A, 100/pk (PN:1820-090)

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Authorized Whatman DistributorSKU: 1820-090

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Sale price$113.20 Regular price$124.88

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Description

GF/A 9.0CM 100/PK
Glass Microfiber Binder Free Grade GF/A circles, 90 mm, 100/pk. Offers fine particle retention and high flow rate, as well as good loading capacity.

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Specifications

air-flow-rate 4.3 s/100 ml/in2
brand Whatman
diameter-cm 9.0
diameter-mm 90
grade GF/A
iw-tremont-equivalent A9000
lead-time 5
list-price 124.88
manufacturer-part-number 1820-090
model Grade GF/A
part-number 1820-090
pore-size 1.6
quantity-per-pack 100

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We offer Net 30 terms for qualified business customers, allowing you to receive your order now and pay within 30 days of the invoice date.

Frequently Asked Questions

Grade GF/A glass microfiber filters are designed for fast filtration of fine particles in air and liquid samples. They are widely used in environmental monitoring, water testing, protein filtration, and gravimetric particulate analysis where high flow and loading capacity are important.

GF/A filters provide nominal particle retention of approximately 1.6 µm at high efficiency, making them suitable for capturing fine suspended solids while maintaining rapid flow rates.

Binder-free construction means the filter is made from pure borosilicate glass fibers without added binders, resulting in low extractables, excellent chemical resistance, and minimal sample interference during analysis.

Typical specifications include:

Diameter: 90 mm
Material: borosilicate glass microfiber
Thickness: ~0.26 mm
Particle retention: ~1.6 µm
Flow rate: fast, high loading
Sterility: non-sterile
Pack size: 100 filters

These features make the filters suitable for high-volume laboratory filtration.

GF/A filters are commonly used for air pollution monitoring, wastewater testing, food and beverage analysis, algae and bacteria filtration, and gravimetric airborne particulate determination.

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