Ahlstrom Binderless Glass Microfiber Filters, Grade 141

Grade 141: 3.1 µm - Fast speed. This grade offers better filtration speed and a higher loading capacity than an analytical filter paper of similar particle retention. Grade 141 is particularly recommended for pre-filtration of membrane filters and is also used in combination with Grade 121 as a high efficient protective and retentive grade density pre-filter for membrane filters. Standard glass microfiber filters contain no binders or other additives that may cause interference to sensitive enzymatic or other chemical reactions. The unique characteristics of glass microfiber filters make its use particularly advantageous to laboratory filtration by enabling fast filtration of large volumes and difficult solutions without premature clogging.

• Qualitative analysis
• Laboratory analysis
• 100% pure borosilicate glass
• Rapid flow rate
• Fine particle retention
• High loading capacity
• Chemical and thermal resistance (up to 500°C)
• Long shelf life
• Brilliant white color reflecting more than 96% of visible light
• Custom cut

Grade 141 Properties:
• Retention: 3.1 µm
• Filtration speed (Herzberg): 19 sec./100 mL
• Filtration speed (Rapidity): 350 mL/min.
• Loading capacity: Very High
Image(s) are representative of the product group and not necessarily the individual product.

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Filter Size (cm): 2.1

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Filter Size (cm): 2.4

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Filter Size (cm): 4.25

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Filter Size (cm): 4.7

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Filter Size (cm): 5.5

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Filter Size (cm): 7

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Filter Size (cm): 9

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Filter Size (cm): 11

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Filter Size (cm): 12.5

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Filter Size (cm): 14.2

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Filter Size (cm): 15