Coarse Filter Paper

…piece design Rugged and rigid polyethylene construction, ideal for heavy use Available with FIXED or REMOVABLE Fritware® porous filter plate for direct filtering or to support filter paper Available with FIXED or REMOVABLE perforated plate for coarse filtering or to support filter paper

Designed for general qualitative laboratory work Fast filtering speed; 25um particle retention Low retentivity, which retains coarse or gelatinous precipitates such as aluminum hydroxide, cobalt carbonate, mercury iodide and magnesium hydroxide Creped surface; thickness approximately…

KIMAX funnel used wherever filter paper and membranes cannot withstand the chemical attack of the filtrate. With a marking spot Constructed with heavy-walled stems, and top rims are beaded for extra strength Designed from Federal Specification DD-F-776

Table-top Buchner funnels with coarse porosity (90-130 microns) with removable filter plates are 6.4mm (1/4") thick high density polyethylene with a non-porous circumference to better fasten filter paper to the plate. The high density polyethylene rigid plate is 4.8mm (3/16") thick. Holes…

…Qualitative Filter Papers are made of 100% cotton linter cellulose. Primarily used for clarifying and removing precipitates (ppt) and preparation for quantitative analysis. These papers can be used over a pH range from 0-12 and a maximum temperature of 120°C. Ash content of 0.1%. Papers have…

…retention, fast flow rate paper with good chemical resistance and wet strength. Recommended for analysis of soils, fertilizers, cement, and minerals. Nominal Retention: 5 µm. Grade No. 5A Retains coarse and gelatinous ppt with high flow rates. Filter hydroxides, metalic aerosols,…

…filter plate. The fixed plate models can be used for coarse filtration or with a cloth or paper filter. A removable filter plate allows easier cleaning and precious metals recovery. Available with fixed or removable Fritware® porous filter plate for direct filtering or to support filter paper or…

…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…

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…

WUsed in applications where filter paper would be attacked by the material being filtered, these borosilicate glass Buchner filter funnels with sealed-in fritted glass discs are available in Coarse(C), Medium(M), or Fine(F) porosities.

Ahlstrom 962: 27μm – Fast Speed This fast filtering grade is a thinner version of Ahlstrom 961. Ahlstrom 962 is recommended for the filtration of coarse and gelatinous precipitates. The creped surface of Ahlstrom 962 also offers higher surface area to maintain high filtration speed.

…Qualitative filter papers are often used in routine separation work that still requires high purity and consistent performance. Ahlstrom 961: 40µm – Fast Speed This fast filtering grade, with extremely high loading capacity, is recommended for the filtration of coarse and…

…these filter papers is acid washing. All grades are double acid washed in hydrochloric then hydrofluoric acid to reduce levels of SiO2, CaO, and Fe2O3. Following the acid wash, all papers are rinsed in ultrapure water to neutralize. Ash Content: 0.01%. Grade No. 5A Retains coarse and…

…high purity filter papers suitable for routine quantitative gravimetric techniques and in the preparation of samples for use in analysis involving instrumental techniques. Ahlstrom 54: 10µm – Fast Speed This is a fast filtering grade for rapid filtration of coarse particles…

…3500-PB Lead Detection: Dithizone Method Preparation of the dithizone includes filtering through a paper, such as Grade 94. During the sample digestion the sample is filtered through a leadfree filter paper, such as Grade 55. Construction Laboratory Applications: ASTM D2435-11…

…to better fasten filter paper to the plate. The high density polyethylene rigid plate is 4.8mm (3/16") thick. Holes are 4.8mm (3/16") diameter on 11mm (7/16") centers. The fixed plate models can be used for coarse filtration or with a cloth or paper filter. All plates are supported…

…Filtration Glass Micro Fiber GRADE D - Coarse porosity, fast flow rate, with a 2.7 µm size particle retention. Well suited for higher volume and repetitive laboratory filtering. Also ideally used as a general pre-filter to extend primary filter life. Binderless borosilicate glass…

…Filter Plates supported by a multiple ring grid; HDPE, 6.4mm (1/4") thick, with a non-porous ring at the periphery of the plate which seals filter paper when used Fritware® Porous Filter Plates available in two porosities (medium and coarse); medium is 45-90 microns while the coarse is…

…Filter Paper, Ahlstrom 388 Suitable for routine gravimetric analysis and typical preparation of samples for use in analysis involving instrumental techniques. Low ash grades have intermediate ash content between qualitative grades and ashless grades. Grade 388 is fast filtering and used…

Flast flowing with Fritware® Porous Plates HDPE with sealed-in, polyethylene filter plate of coarse porosity (90-130 microns) Offer good retention and fast flow under vacuum Can be used with or without filter paper Use below 52°C (125°F)

…or 30mm diameter and medium or coarse porosity fritted disc. These fritted disc funnels are very useful in preparative work, or in making separations where it is necessary to wash the precipitate and redissolve with chemicals which would attack filter paper. The angle of the funnel body facilitates…

…analysis, filter weighing, checkweighing, formulation, averaging, etc. QP3 The Utility software application package contains weighing applications and function extensions such as bootscreen, color scheme, free formula, fiber coarseness, diameter determination, air buyoancy correction, paper…