Filter Paper, Qualitative, Pre-Pleated, Grade 113V, Cytiva Whatman™
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Filter Paper, Qualitative, Pre-Pleated, Grade 113V, Cytiva Whatman™
Three Cytiva Whatman qualitative grades are offered in this convenient form which has major advantages over flat circles. Sold in 100 filters per package.
- Grade 113V - 30µm particle retention. Very thick and strong filter with extremely high loading capacity, particularly in folded form. Fastest flow rate of any qualitative grade. Creped surface. Ideal for coarse particles and gelatinous precipitates. Not suitable for Kjeldahl analysis due to resin reinforcing additive.
- Grade 113 has a high wet strength due to the addition of a small quantity of chemically stable resin. Normal qualitative applications will not introduce any signification impurities into the filtrate. The resins do, however, contain nitrogen so this grade should not be used in Kjeldahl estimations etc.
- 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 because more filter area is available
- Maintained flow rate because of the reduction in filter paper contact with funnel side and, of course, the self-supporting shape of the filter itself