•
Typical properties
| Typical particle retention in liquid (µm)¹ |
8 |
| Nominal ash content (%)³ |
0.005 |
| Nominal air flow (s/100 mL/in²) |
13 |
| Nominal thickness (µm) |
160 |
| Nominal basis weight (g/m²) |
85 |
| Typical water flow rate (mL/min)² |
97 |
•
Ordering information – quantitative filter papers – ashless grades
| Dimensions (mm) |
Catalog number |
Quantity/Pack |
| 21 |
1540-321 |
100 |
| 24 |
1540-324 |
100 |
| 42.5 |
1540-042 |
100 |
| 55 |
1540-055 |
100 |
| 90 |
1540-090 |
100 |
| 110 |
1540-110 |
100 |
| 125 |
1540-125 |
100 |
| 150 |
1540-150 |
100 |
| 185 |
1540-185 |
100 |
| 240 |
1540-240 |
100 |
| 320 |
1540-320 |
100 |
Grade 540: 8 μm
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.
