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Ships within 48 hours · Estimated delivery Jul 5 - Jul 10
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Description
Ahlstrom Grade 617 Qualitative Filter Paper - 50 CirclesAhlstrom Grade 617 Qualitative Filter Paper 50 Circles Ahlstrom 617 is an extremely fast filtering grade and has a larger particle retention than Grade 631. Grade 617, a thicker filter paper with higher loading capacity, is used for rapid filtration of coarse particles and gelatinous precipitates such as in oils and resin solutions. Grade 617 is also found in construction product testing and is used by students to retain large flocculants and
Ahlstrom Grade 617 Qualitative Filter Paper - 50 Circles
Ahlstrom’s qualitative grades of filter paper are, by definition, recommended for use in analytical methods, which determine or identify particulate constituents of a mixture irrespective of the amount present. Qualitative filter papers are often used in routine separation work that still requires high purity and consistent performance.
- Grade: 617
- Retention in µm: 35 µm
- Filtration Speed punch Herzberg sec/100mls: 19 s/100 mL
- Filtration Speed Rapidity mls/min: 360 mL/min
- Loading Capacity: Very High
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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- Standard Shipping : 3-10 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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4.9 ★★★★★
Based on 1701 reviews
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Product Reviews
★★★★★ 4
Great color but destroy easily
Color: Orange, Size: 20 PACK
These balls are easily visible and excellent in situations where green balls may be difficult to find.
I only take these balls out to play fetch. The balls only last a couple of fetch sessions before being destroyed.
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Reviewed in the United States on February 17, 2025
★★★★★ 5
Great quality and great color!
Color: Yellow, Size: 6 PACK, Color: Yellow, Size: 6 PACK
I bought this pack of six tennis balls for weekend games with my kids and some casual practice, and they’ve been great so far. The bounce is consistent, they feel solid off the racket, and they don’t go flat quickly like some cheaper balls I’ve tried before. They work well on both the court and just for backyard play.
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Reviewed in the United States on February 18, 2026
★★★★★ 5
Excelente 👌
Color: Yellow, Size: 20 PACK
Excelente 👌
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Reviewed in the United States on May 30, 2026
★★★★★ 5
Excelente
Color: Yellow, Size: 20 PACK
Excelente calidad, la compré hace meses y aún se conservan
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Reviewed in the United States on April 20, 2026
★★★★★ 5
Doggo loves them!!!
Color: Yellow, Size: 20 PACK
Doggo loves the balls.
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Reviewed in the United States on March 28, 2026