Retention of very fine crystalline precipitates. The thinnest of all Whatman filter papers. Slow flow rate. Hardened and highly glazed surface. This finish also keeps the paper free from loose surface fibres. Highly suitable for qualitative or quantitative filtrations requiring vacuum assistance on Büchner or 3-piece filter funnels.
Will withstand wet handling and precipitate removal by scraping. In the electronics industry, the virtual absence of fiber shedding is utilised in carriers for integrated circuits.
- Very strong when wet.
- Hardened low ash grades.
Description:
slow
Particle retention in liquid:
2.7 µm
Filtration speed Herzberg:
2685 s
Ash content:
0.015 %
Typical thickness:
115 µm
Basis weight:
97 g / m2
Filter type:
filter circle
Filtration time:
144.00 [s]
Type
Höhe mm
Order No.
PU
Manuf. Prod. No.
Grade 50
42.50
5428637
100
-
1450-042
Grade 50
55.00
5428638
100
-
1450-055
Grade 50
70.00
5428639
100
-
1450-070
Grade 50
90.00
5428640
100
-
1450-090
Grade 50
110.00
5428641
100
-
1450-110
Grade 50
125.00
5428642
100
-
1450-125
Grade 50
150.00
5428643
100
-
1450-150
Grade 50
185.00
5428644
100
-
1450-185
Grade 50
240.00
5428645
100
-
1450-240
Grade 50
320.00
5428646
100
-
1450-320
Grade 50
500.00
5428648
100
-
1450-500
Ash is determined by ignition of the cellulose filter at 900 °C in air.