Product Description
Filter Paper Grade 540
A general purpose hardened ashless filter paper with medium retention and flow rate. Extremely pure and strong with a hard surface. High chemical resistance to strong acid and alkali. Frequently used in the gravimetric analysis of metals in acid/alkali solutions and in collecting hydroxides after precipitation by strong alkalis.
| Grade | Typical Particle Retention in Liquid (µm)1 | Nominal Ash Content (%)3 | Nominal Thickness (µm) | Nominal Basis Weight (g/m2) | Typical Water Flow Rate (mL/min)2 | Nominal Air Flow Rate (s/100 mL/in2) |
|---|---|---|---|---|---|---|
| 540 | 8 | 0.005 | 160 | 85 | 97 | 13 |
