Whatman Grade 1V lab filter paper 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. 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
