WHA10310245

Whatman^® application specific filter, prepleated qualitative filter paper, Grade 287 1/2

circles, diam. 150 mm, pack of 50

• Synonym(s): Z749044
• UNSPSC Code: 41104900
• NACRES: NB.24

Properties

• material: cellulose membrane (Kieselguhr paper); circles
• sterility: non-sterile
• feature: Grade 287 1/2
• packaging: pack of 50
• manufacturer/tradename: Whatman 10310245; Whatman Article No. 28414165 (US reference)
• parameter: 330 sec/100 mL speed (Herzberg)
• diam.: 150 mm
• thickness: 360 μm
• basis weight: 161 g/m²

Description

General description

Time-saving Whatman qualitative grades are offered in this convenient form, which gives major advantages over flat circles:

• 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

Grade 287 ½: kieslghur paper
Application specific cellulose filter paper. Kieselguhr paper with a medium to slow flow rate. Additional adsorption effect, e.g., for the separation of very fine semi-colloidal turbidity, for clarifying milk serum, starch solutions, soil suspensions or sugar-containing solutions prior to polarimetry or refractometry.

Features and Benefits

• 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.

Other Notes

Field of Use : For internal research use only. Products are not intended for diagnostic use or resale.

Legal Information

Whatman is a registered trademark of Cytiva