Circle Filter Paper, qualitative, wet strength, 240 mm, Grade 1575, slow, 90 g/sqm, 100 pcs.

Highly pure hard filter papers for qualitative analysis

Highly pure hard filter papers with very low mineral content (on average 0.05% ash) and extremely high mechanical and chemical stability are particularly recommended for vacuum and pressure filtration, and for the use of acidic and alkaline solutions.

• Made from highly refined cotton linters and cellulose
• Alpha cellulose content over 95%, therefore high stability and resistance
• Very high wet strength; Precipitation can be removed or washed off easily and without fibers;
• Use in vacuum and pressure filtration systems
• Low mineral content (average 0.05% ash)
• High resistance to aggressive chemical components such as sulfuric and nitric acid (up to 40% at 50° Celsius) and alkalis (up to 10% at 20° Celsius)

These types are available as round filters with the following sizes in millimeters: 47 – 55 – 70 – 90 – 110 – 125 – 150 – 185 – 240.

This product is equivalent to: Schleicher-Schüll 1575 -- Whatman 50 -- Macherey Nagel 1674 -- Sartorius 1291