Qualitative filter papers, standard grades, grade 6, Whatman™

A standard grade filter for boiler water analysis.

Twice as fast as Grade 5 with similar fine particle retention
Often specified for boiler water analysis applications

These cellulose filters are used in qualitative analytical techniques to determine and identify materials. Prepleated qualitative filters are also available, which give improved flow rate and increased loading capacity compared to equivalent flat filters.

Catalog No:
516-3606
512-1037
512-1036
516-3611
516-3610
516-0603
512-1038
516-5127

Grade:
6
6
6
6
6
6
6
6

Weight:
100 g/m²
105 g/m²
105 g/m²
105 g/m²
105 g/m²
100 g/m²
105 g/m²
100 g/m²

Thickness:
180 µm
180 µm
180 µm
180 µm
180 µm
180 µm
180 µm
180 µm

Particle retention:
3 µm
3 µm
3 µm
3 µm
3 µm
3 µm
3 µm
3 µm

Filtration speed:
715 s (Herzberg)
715 s (Herzberg)
715 s (Herzberg)
715 s (Herzberg)
715 s (Herzberg)
715 s (Herzberg)
715 s (Herzberg)
715 s (Herzberg)

Ash content:
0,15%
0,15%
0,15%
0,15%
0,15%
0,15%
0,15%
0,15%

Airflow rate:
32 s/100 ml/6,5 cm²
32 s/100 ml/6,5 cm²
32 s/100 ml/6,5 cm²
32 s/100 ml/6,5 cm²
32 s/100 ml/6,5 cm²
32 s/100 ml/6,5 cm²
32 s/100 ml/6,5 cm²
32 s/100 ml/6,5 cm²