Whatman Grade 1V lab filter paper from Cytiva 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. 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.