Filter paper, qualitative

The absorbent paper strips are made of qualitative filter paper. They are suited to absorb excess fluids such as staining solutions for microscope specimens.

The qualitative filter papers are manufactured from pure cellulose with a proportion of alpha-cellulose of almost 100 %. The ash content is about 0.06 %.

Grade 2020, medium to slow filtering, particle retention 5-13 µm, filtration speed 88 s according to DIN 53137, basis weight 73 g/m², thickness 0.16 mm

For fast filtration with fine particles for general, electrolytic application in schools, research, health care, food and cosmetics industry.

The qualitative filter papers are manufactured from pure cellulose with a proportion of alpha-cellulose of almost 100 %. The ash content is about 0.06 %.

Grade 2015, medium to slow filtering, particle retention 5-8 µm, filtration speed 50 s according to DIN 53137, basis weight 87 g/m², thickness 0.16 mm

For fast filtration with fine particles, when the filtration speed plays a minor role.

The LABSOLUTE® extraction thimbles are made of 100 % cellulose. They have a high mechanical stability and are free from binders. The extraction thimbles have a wall thickness of about 1 mm and a pore size of approximately 5 µm. They are perfect for all kind of Soxhlet extractions as well as for the separation of liquid and solid particles out of air and gases.

The qualitative filter papers are manufactured from pure cellulose with a proportion of alpha-cellulose of almost 100 %. The ash content is about 0.06 %.

Grade 2020, medium to slow filtering, particle retention 5-13 µm, filtration speed 88 s according to DIN 53137, basis weight 73 g/m², thickness 0.16 mm

For fast filtration with fine particles for general, electrolytic application in schools, research, health care, food and cosmetics industry.

The wet-strengthened filter papers exhibit a very high degree of mechanical stability. They are resistant against acidic and alkaline solutions and are suitable for pressure and vacuum filtration. The qualitative filter papers are manufactured from pure cellulose with a proportion of alpha-cellulose of almost 100 %. The ash content is about 0.06 %.

Grade 2105, fast filtering, particle retention 12-15 µm, filtration speed 10 s according to DIN 53137, basis weight 84 g/m², thickness 0.20 mm, wet strengthened

For large-volume or gel-like deposits (e.g. hydroxides of iron and copper or sulphides of iron and cobalt). Especially high mechanical strength and resistance to acids and alkalis.

The qualitative filter papers are manufactured from pure cellulose with a proportion of alpha-cellulose of almost 100 %. The ash content is about 0.06 %.

Grade 2005, fast filtering, particle retention 12-15 µm, filtration speed 10 s complies with DIN 53137, basis weight 84 g/m², thickness 0.20 mm

For large-volume or gel-like deposits (e.g. hydroxides of iron and copper or sulphides of iron and cobalt).

The qualitative filter papers are manufactured from pure cellulose with a proportion of alpha-cellulose of almost 100 %. The ash content is about 0.06 %.

Grade 2010, medium fast filtering, particle retention 8-12 µm, filtration speed 20 s according to DIN 53137, basis weight 84 g/m², thickness 0.17 mm

The most frequently used filter for analytical work, e.g. malt analyses according to EBC, precipitation of silver sulphide, precipitation of chromates (iron, lead, arsenic).

The qualitative filter papers are manufactured from pure cellulose with a proportion of alpha-cellulose of almost 100 %. The ash content is about 0.06 %.

Grade 2015, medium to slow filtering, particle retention 5-8 µm, filtration speed 50 s according to DIN 53137, basis weight 87 g/m², thickness 0.16 mm

For fast filtration with fine particles, when the filtration speed plays a minor role.

The qualitative filter papers are manufactured from pure cellulose with a proportion of alpha-cellulose of almost 100 %. The ash content is about 0.06 %.

Grade 2005, fast filtering, particle retention 12-15 µm, filtration speed 10 s according to DIN 53137, basis weight 84 g/m², thickness 0.20 mm

For large-volume or gel-like deposits (e.g. hydroxides of iron and copper or sulphides of iron and cobalt).

The qualitative filter papers are manufactured from pure cellulose with a proportion of alpha-cellulose of almost 100 %. The ash content is about 0.06 %.

Grade 2025, slow filtering, particle retention 3-5 µm, filtration speed 100 s according to DIN 53137, basis weight 84 g/m², thickness 0.15 mm

For precipitation such as zinc, nickel and tin sulphide, calcium fluoride and calcium hydroxide.

The wet-strengthened filter papers exhibit a very high degree of mechanical stability. They are resistant against acidic and alkaline solutions and are suitable for pressure and vacuum filtration. The qualitative filter papers are manufactured from pure cellulose with a proportion of alpha-cellulose of almost 100 %. The ash content is about 0.06 %.

Grade 2110, medium fast filtering, particle retention 17-30 µm, filtration speed 22 s according to DIN 53137, basis weight 73g/m², thickness 0.17 mm, wet strengthened

For large volume or gel-like precipitation. Especially high mechanical strength and resistance to acids and alkalis.

The qualitative filter papers are manufactured from pure cellulose with a proportion of alpha-cellulose of almost 100 %. The ash content is about 0.06 %.

Grade 2010, medium fast filtering, particle retention 8-12 µm, filtration speed 20 s according to DIN 53137, basis weight 84 g/m², thickness 0.17 mm

The most frequently used filter for analytical work, e.g. malt analyses according to EBC, precipitation of silver sulphide, precipitation of chromates (iron, lead, arsenic).

The qualitative filter papers are manufactured from pure cellulose with a proportion of alpha-cellulose of almost 100 %. The ash content is about 0.06 %.

Grade 2030, very slow filtering, particle retention 2-3 µm, filtration speed 180 s according to DIN 53137, basis weight 84 g/m², thickness 0.14 mm

For difficult filtration requirements or very fine precipitates (e.g. barium sulphate, copper oxide, tin oxide)

The wet-strengthened filter papers exhibit a very high degree of mechanical stability. They are resistant against acidic and alkaline solutions and are suitable for pressure and vacuum filtration. The qualitative filter papers are manufactured from pure cellulose with a proportion of alpha-cellulose of almost 100 %. The ash content is about 0.06 %.

Grade 2115, medium to slow filtering, particle retention 5-8 µm, filtration speed 50 s according to DIN 53137, basis weight 84 g/m², thickness 0.15 mm, wet strengthened

For fast filtration with fine particles, when the filtration speed plays a minor role. Especially high mechanical strength and resistance to acids and alkalis.

The wet-strengthened filter papers exhibit a very high degree of mechanical stability. They are resistant against acidic and alkaline solutions and are suitable for pressure and vacuum filtration. The qualitative filter papers are manufactured from pure cellulose with a proportion of alpha-cellulose of almost 100 %. The ash content is about 0.06 %.

Grade 2130, very slow filtering, particle retention 2-3 µm, filtration speed 180 s according to DIN 53137, basis weight 84 g/m², thickness 0.14 mm, wet strengthened

For difficult filtration requirements or very fine precipitates (e.g. barium sulphate, copper oxide, tin oxide) Especially high mechanical strength and resistance to acids and alkalis.

The qualitative filter papers are manufactured from pure cellulose with a proportion of alpha-cellulose of almost 100 %. The ash content is about 0.06 %.

Grade 2025, slow filtering, particle retention 3-5 µm, filtration speed 100 s according to DIN 53137, basis weight 84 g/m², thickness 0.15 mm

For precipitation such as zinc, nickel and tin sulphide, calcium fluoride and calcium hydroxide.

The qualitative filter papers are manufactured from pure cellulose with a proportion of alpha-cellulose of almost 100 %. The ash content is about 0.06 %.

Grade 2035, very slow filtering, particle retention 2 µm, filtration speed 300 s according to DIN 53137, basis weight 80 g/m², thickness 0.14 mm

For fine and very fine precipitates, e.g. in sample preparation, beverage industry for residual sugar determination and HPLC.

The qualitative filter papers are manufactured from pure cellulose with a proportion of alpha-cellulose of almost 100 %. The ash content is about 0.06 %.

Grade 2030, very slow filtering, particle retention 2-3 µm, filtration speed 180 s according to DIN 53137, basis weight 84 g/m², thickness 0.14 mm

For difficult filtration requirements or very fine precipitates (e.g. barium sulphate, copper oxide, tin oxide)

The wet-strengthened filter papers exhibit a very high degree of mechanical stability. They are resistant against acidic and alkaline solutions and are suitable for pressure and vacuum filtration. The qualitative filter papers are manufactured from pure cellulose with a proportion of alpha-cellulose of almost 100 %. The ash content is about 0.06 %.

Grade 2105, fast filtering, particle retention 12-15 µm, filtration speed 10 s according to DIN 53137, basis weight 84 g/m², thickness 0.20 mm, wet strengthened

For large-volume or gel-like deposits (e.g. hydroxides of iron and copper or sulphides of iron and cobalt). Especially high mechanical strength and resistance to acids and alkalis.

The wet-strengthened filter papers exhibit a very high degree of mechanical stability. They are resistant against acidic and alkaline solutions and are suitable for pressure and vacuum filtration. The qualitative filter papers are manufactured from pure cellulose with a proportion of alpha-cellulose of almost 100 %. The ash content is about 0.06 %.

Grade 2115, medium to slow filtering, particle retention 5-8 µm, filtration speed 50 s complies with DIN 53137, basis weight 84 g/m², thickness 0.15 mm, wet strengthened

For fast filtration with fine particles, when the filtration speed plays a minor role. Especially high mechanical strength and resistance to acids and alkalis.

The wet-strengthened filter papers exhibit a very high degree of mechanical stability. They are resistant against acidic and alkaline solutions and are suitable for pressure and vacuum filtration. The qualitative filter papers are manufactured from pure cellulose with a proportion of alpha-cellulose of almost 100 %. The ash content is about 0.06 %.

Grade 2110, medium fast filtering, particle retention 17-30 µm, filtration speed 22 s according to DIN 53137, basis weight 73g/m², thickness 0.17 mm, wet strengthened

For large volume or gel-like precipitation. Especially high mechanical strength and resistance to acids and alkalis.

Medio rapida, dimensioni pori da 5 a 8 µm o da 5 a 13 µm

Medio rapida, dimensione pori da 5 a 8 µm.

• Per filtrazione rapida con particelle fini

Velocità media, dimensioni pori da 5 a 13 µm.

• per lavori analitici in laboratorio

Molto rapida, dimensione pori da 12 a 15 µm.

Lenta, dimensione pori da 2 a 3 µm.

Filtri rotondi e fogli. Per analisi qualitativa. Leggermente più spessa del tipo 1.

Filtrazione medio-rapida, piegata.
Per la determinazione del grasso, priva di grassi e resine. Residuo solubile in etere <0,1 mg per diam. Filtri da 270 mm.

Filtro rotondo. Per scopi generici, increspate.

Rotonda. Qualitativa. Ritenzione eccellente di precipitati grezzi e gelatinosi. Liscia.

Medio rapida, da 4 a 7µm

• Risparmio di tempo, poiché i filtri piegati hanno una superficie maggiore
• Filtrare più velocemente rispetto ai filtri circolari comparabili
• Per precipitati da medi a fine e per applicazioni generali in laboratorio
• Peso: 68g / m²
• Spessore: 0,15 mm

Filtrazione media, liscia.

Rapido, liscio.

Medio-rapido, liscio.

Per la determinazione di sostanze nutritive povere di azoto e fosforo.

Filtri rotondi e fogli. Per analisi qualitativa. Per usi generali

Medio veloce da 4 a 7 µm

• carta da filtro sottile
• per precipitati da medi a fini e per lavori di laboratorio generali
• peso: 68g/m²
• spessore: 0.150 mm

Adatti per metodi analitici in fabbriche di birra per filtrare ed analizzare, basati su procedure raccomandate da EBC ( (European Brewery Convention).

• Velocità media
• Superficie granulosa

Per analisi qualitativa. Filtro pre-piegato versione del Numero 2.