7 cm Lab Filter Paper, Standard Grades 1, 2, 4 - ZENPORE Fast, Medium, Slow Flow 70 mm (Bundle of 3)

7 cm Lab Filter Paper, Standard Grades 1, 2, 4 - ZENPORE Fast, Medium, Slow Flow 70 mm (Bundle of 3 x 100 discs)

7 cm Lab Filter Paper, Standard Grades 1, 2, 4 - ZENPORE Fast, Medium, Slow Flow 70 mm (Bundle of 3)

GRADE 1, 2, 4 STANDARD Qualitative Filter Paper Equivalent to Whatman grade 1, 2, 4, these laboratory filter paper are used for a broad range of filtration when you need to separate a solid or precipitate from the filtrate. Made from high alpha-cellulose cotton, these standard lab filter are not intended for ashing. APPLICATIONS Depending on the grades, these filters have many applications, for example: COARSE TO HIGH RETENTION Retains fine, medium and coarse precipitates depending on grade used, for example: PLAIN-DISCS These Flat Discs are suitable for gravity and Buchner low suction vacuum filtration. The same affordable filters are also available funnel-ready prefolded or prepleated. EQUIVALENCE & SIZE See the cross-reference table and size diagrams in the photos to choose the appropriate reference and diameter of your circles.

Key Features

• ✅ GRADES 1, 2, 4 : 7cm - Equivalent to Whatman Top 3 standard qualitative grades (70mm)
• ✅ GRADE 1 : MEDIUM RETENTION / MEDIUM FLOW - Retains medium crystalline particles (10~15 micron)
• ✅ GRADE 2 : HIGH RETENTION / SLOW FLOW - Retains fine crystalline particles (5~10 micron)
• ✅ GRADE 4 : COARSE RETENTION / FAST FLOW - Retains coarse and gelatinous precipitates (20~25 micron)
• ✅ BROAD APPLICATION RANGE : lab & chemistry, food & agriculture, brewing & wine, air & gas filtration

✅ Product Dimensions: 2.87 x 2.87 x 2.36 inches; 4.16 ounces

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