Lotus Connect Store › Premium Qualitative Filter Paper, 100 Pack - 7.28" (18.5cm) - Eisco Labs Image 1 of 1 Premium Qualitative Filter Paper, 100 Pack - 7.28" (18.5cm) - Eisco Labs $10.36 High retentivity, perfect for general laboratory filtering and qualitative analysis10�L (micron) pore sizeMedium Speed (85 gsm)Pack of 100 circlesPremium quality 18.5cm diameter filter paper for use in labs. Medium speed. Pore size: 10�L. Pack of 100 circles. Quantity: Add To Cart Added! High retentivity, perfect for general laboratory filtering and qualitative analysis10�L (micron) pore sizeMedium Speed (85 gsm)Pack of 100 circlesPremium quality 18.5cm diameter filter paper for use in labs. Medium speed. Pore size: 10�L. Pack of 100 circles.