Quantitative Filter Papers

Available diameters: 55, 70, 90, 110, 125, 150, 185 mm

Quantitative analysis in general, especially in determinations of gravimetry precipitates such as barium sulfate (hot), chromate barium or calcium oxalate.
It is recommended as an alternative to implementing the roles S & S 589 / 5 (banda red), Whatman 42 or Macherey Nagel-640md..

Uses:

filtration speed medium to slow
Weight: 85g/m3
Thickness: 0.20 mm
Speed filtration: 55 seconds according to DIN 53-137.
Ash residue: 0.01%
Retention average: 2.5 mm

Characteristics

The line CN543 has characteristics similar to the CN542, but with greater speed filtering.

CN543 Line

Special determinations gravimetry Precipitate of very fine particles such as barium sulfate and lead oxide, copper, zinc and nickel sulphide, the oxalate and calcium fluoride.
Specifically for quantitative determinations of alkali metals in enamels and varnishes, stains determinations of essays by blanks (reactve strips) and fine sulfate crystals.
It is recommended as an alternative to implementing the roles S & S 589 / 3 (banda blue), Whatman 42 or Macherey Nagel-640d.

Uses:

Filtration speed slow
Weight: 85g/m3
Thickness: 0.17 mm
Speed filtration: 140 seconds as DIN 53-137.
Ash residue: 0.01%
Retention average: 1.5 mm

Characteristics

The more convenient line for determinations precipitated by very fine particles.

CN-542 Line

Quantitative analysis in general and especially in determinations of gravimetry floculentos precipitated hydroxides or gelatinous as iron, zirconium, aluminum and cobalt sulfide.
It can also be used in air pollution controls to determine gaseous compounds.
Their use is recommended in analytical procedures rapid precipitates unstable as silicon.
Other applications include the analysis of bauxite, alkali metal in enamels and varnishes and analysis of paper.
It is recommended as an alternative to implementing the roles S & S 589 / 1 (banda black), Whatman 41 or Macherey Nagel-640W

Uses:

Filtration Speed fast
Weight: 85g/m3
Thickness: 0.20 mm
Speed filtration: 9 seconds according to DIN 53-137.
Ash residue: 0.01%
Retention average: 10mm.

Characteristics

It is the l ine filter paper recommended for analytical procedures with thick dust or precipitates floculentos or gelatinous.

CN-541 Line

Quantitative analysis in general and determinations of gravity that require fast speed filtration.
It is also frequently used as a filter for high-purity filtration rapid trace elements such as chromate silver, lead sulphate and hydroxides zinc and aluminum, and sulphites rapid analysis of silicones.
In soil analysis finds application to separate solid and aqueous extracts.
It is recommended as an alternative to implementing the roles S & S 589 / 2 (banda white), Whatman 40 or Macherey Nagel-640m.

Uses:

Filtration speed medium to fast
Weight: 85 g/m3
Thickness: 0.20 mm
Ash residue: 0.01%
Retention average: 2mm.
Speed filtration: 27 seconds according to DIN 53-137.

Characteristics

Ideal for quantitative analysis in general and determinations of gravity that require rapid speed filtration.

CN-540 Line

They are made using reverse osmosis water and treated with diluted acid to remove any impurities organic and inorganic.

They have a very low ash content and present a very high mechanical strength in a wet state.  

The line of Quantitative MicroClean filter paper has been developed for use in techniques to measure particles suspended in a liquid.  

Quantitative Filter Paper

Quantitative Paper Filters & Qualitative Paper Filters
Available in different sizes.