Whatman™ Qualitative filter papers, fluted, grade 1V

Whatman™ Grade 1V lab filter paper from Cytiva's business is a widely used pre-folded filter for many general filtration applications.

• Nominal particle retention rating of 11 µm supports general filtration
• Intermediate filtration speed (Herzberg 150 s)
• Pre-folded filter for ease-of-use and time savings with conical filter funnels; avoids the need to quadrant-fold circles

Cytiva offers a full line of qualitative papers in standard filter grades and wet-strengthened grades.

Whatman pre-folded general filter paper

As the pleated and pre-folded version of Whatman filter paper 1, Grade 1V is well suited for qualitative analysis in routine applications including:

• Separations of lead sulfate, hot calcium oxalate, and calcium carbonate
• Agriculture, for soil analysis
• Food quality testing to separate solid foodstuffs from associated liquid
• Education, to teach simple qualitative analysis

Looking for a filter paper, membrane filter, or syringe filter? Let Cytiva help you find the optimal filter for your needs to ensure reliable analysis.