Lotus Connect Store › Eisco Labs Premium Qualitative Filter Paper, 21.5cm Dia., Medium Speed (85 gsm), 10 (10 micron) Pore Size - Pack of 100 ? Image 1 of 1 Eisco Labs Premium Qualitative Filter Paper, 21.5cm Dia., Medium Speed (85 gsm), 10 (10 micron) Pore Size - Pack of 100 ? $16.78 High retentivity, perfect for general laboratory filtering and qualitative analysis 10�L (micron) pore sizeMedium Speed (85 gsm)Pack of 100 circlesPremium quality 21.5cm 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 analysis 10�L (micron) pore sizeMedium Speed (85 gsm)Pack of 100 circlesPremium quality 21.5cm diameter filter paper for use in labs. Medium speed. Pore size: 10�L. Pack of 100 circles.