Circle Filter Paper, quantitative, wet strength, 185 mm, Grade 1507, slow, 90 g/qm, 100 pc/PAK

Ashless hard filter papers (on average 0.002% ash), particularly recommended for vacuum and pressure filtration and for the filtration of acid and alkaline solutions.

• Made from highly refined cotton linters and pulp.
• Acid washed and neutralized with water, ideal for the determination of metal ions.
• The very high wet strength allows precipitates to be removed or washed off easily and without fibers.
• 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).
• For analytical applications, quantitative and/or gravimetric routine procedures.
• These types are available as round filters with the following diameters in millimeters: 110 - 125 - 150 - 185.

This product is equivalent to: Schleicher-Schüll 1507 -- Whatman 542 -- Macherey Nagel 1640d -- Sartorius 391