PAPER FILTER Qualitative High Purity Grade 613 25 cm circle 100/pk Exact Match 71440-020

Qualitative Filter Paper 25 Um Fast Speed Exact Match 97058-882

PAPER FILTER Qualitative High Purity Grade 615 33 cm circle 100/pk Exact Match 71440-038

Ahlstrom-Munksjo Filtration LLC
Mfg Item # : 6170-2050
Ahlstrom’s qualitative grades of filter paper are, by definition, recommended for use in analytical methods, which determine or identify particulate constituents of a mixture irrespective of the amount present. Qualitative filter papers are often used in routine separation work that still requires high purity and consistent performance. Ahlstrom offers a complete range of low ash filter papers for general laboratory work that provides you with the correct combination of particle retention, filtration speed, loading capacity and wet-strength. All our qualitative grades consist of > 95% super refined a-cellulose and linter fibers. Qualitative analysis Low ash content 0.06% Untreated Consistent performance Wet-strengthened grades available Custom cut Bulk packaging Standard Grades (Non Wet-Strengthened) Standard qualitative filter papers are suitable for quadrant folded or gravity flow applications. These grades contain a high level of alpha-cellulose that provides high purity but will weaken when wet. The inherent strength of standard (untreated) grades does not pose a problem when they are used in routine quadrant folded applications. We do not recommend these grades for use in vacuum work or when wet handling is required. Ahlstrom 617: 35µm – Fast Speed This is an extremely fast filtering grade and has a larger particle retention than Ahlstrom 631. Ahlstrom 617, a thicker filter paper with higher loading capacity, is used for rapid filtration of coarse particles and gelatinous precipitates such as in oils and resin solutions. Ahlstrom 617 is also found in construction product testing and is used by students to retain large flocculents and precipitates.

FILTER PAPER Qualitative High Purity Grade 617 50 cm circle 100/pk Exact Match 47745-832

FILTER PAPER Qualitative High Purity Grade 631 7 cm circle 100/pk Exact Match 47749-690

Ahlstrom 8613 has a smooth black finish designed for use in applications requiring visual examination of particles.•Low ash content 0.06% •Untreated •Consistent performance

Black Filter Paper Circles 100 Circles/PK. 100PK/CS. 4.70cm diameter circles. Smooth Black Finish Visual Test Filter Paper. Weight 85g/m2 Thickness 0.18mm Herzberg 114sec/100ml Rapidity 60ml/min Capillary Rise 22mm Retention 4um 100% wood fiber. Exact Match 28342-020