Premium Qualitative Filter Paper with a 21.5cm (8.5 inch) diameter High retentivity, perfect for general laboratory filtering and qualitative analysis Pure white with a smooth finish Inspected for uniformity of texture Pack of 100 sheets This Premium Qualitative Filter Paper comes in a pack with 100 sheets. Each sheet has a diameter of 21.5cm (8 inches). This premium filter paper has a high retentivity and is perfect for general laboratory filtering and qualitative analysis. Each sheet is pure white, has a smooth finish, and is rigidly inspected for uniformity of texture.