These 55 mm diameter very slow filtering, purple dot filter paper discs are used for quantitative & gravimetric analyses as well as for pressure or vacuum filtration.

They are made out of 100 % cotton linters with an α-cellulose content of > 98 % and are acid-washed to make the papers ashless and achieve high purity.

• Made of 100 % cotton linters
• Ash-free (ash content ≤ 0.01 % according to DIN 54370)
• Wet-strengthened
• Color-coded box for easy selection
• Very slow filtering
• Very fine-pore
• 100 discs per pack

These 55 mm diameter very slow filtering, purple dot filter paper discs are used for quantitative & gravimetric analyses as well as for pressure or vacuum filtration.

They are made out of 100 % cotton linters with an α-cellulose content of > 98 % and are acid-washed to make the papers ashless and achieve high purity.

• Made of 100 % cotton linters
• Ash-free (ash content ≤ 0.01 % according to DIN 54370)
• Wet-strengthened
• Color-coded box for easy selection
• Very slow filtering
• Very fine-pore
• 100 discs per pack