WHA1204320

Whatman^® Prepleated Qualitative Filter Paper, Grade 4V

circles, diam. 32 cm, pack of 100

• Codice UNSPSC: 41104900
• NACRES: NB.24

Proprietà

• Materiali: cellulose ; circles
• Caratteristiche: Grade 4V
• Confezionamento: pack of 100
• Produttore/marchio commerciale: Whatman 1204-320
• Parametri: 37s/100mL speed (Herzberg)
• Diametro: 32 cm
• Spessore: 205 μm
• Ceneri: 0.06%
• Dimensione pori: 25 μm retention
• Grammatura: 96 g/m²

Descrizione

Descrizione generale

A prepleated filter paper widely used for general purpose filtration. Has excellent particle retention and a good filtration speed and loading capacity.

• Savings in time required to quadrant-fold circles to fit conical filter funnels in repetitive or multiple analyses.
• Decreased overall filtration time because of the extra surface area exposed; the normal slow down of filtration speed due to the loading of particulate is postponed.
• Increased total loading capacity as more filter area is available.
• Maintained flow rate due to the reduction in filter paper contact with funnel side and the self-supporting shape of the filter itself.
• The prepleating does not significantly affect any of the technical data, and the same figures may be used for the flat circles.
• Time-saving Whatman qualitative grades are offered in this convenient form, which gives major advantages over flat circles.

Grade 4V: 25 um
Also available in flat stock form as Grade 4.

Caratteristiche e vantaggi

• Very Fast flow rate
• Retention of coarse and gelatinous precipitates
• Nominal particle retention rating of 20–25 µm
• Fast filtration speed (Herzberg 37 s)
• Fluted (pre-pleated) for compatibility with conical filter funnels without the need for further folding

Note legali

Whatman is a registered trademark of Cytiva