Qualitative filter papers, folded

Supplier: PRAT DUMAS

Superior vellum paper, tight texture quality, for qualitative analysis. Recommended for use in research and analysis laboratories, university hospitals, food, pharmaceutical and chemical industries. For use in conical 60° funnels.

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Phase separating filters

Supplier: PRAT DUMAS

Hydrophobic paper for the fast separation of aqueous solutions from hydrofuge solvents.

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Qualitative filter papers, grade 108

Supplier: PRAT DUMAS

Superior vellum based on pure cellulose. Used for the universal filtrations in laboratory. This quality covers many applications.

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Antibiotic assay discs

Supplier: PRAT DUMAS

For determining antibiotic suited to the treatment of an infection and for checking their sensitivity to antibiotics by means of the inhibition zone determination method.

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Qualitative filter papers, wet-strengthened

Supplier: PRAT DUMAS

Grade 106: These vellum papers are designed for qualitative analysis. They are used for general laboratory filtration in universities, schools, hospital, research laboratories, food and pharmaceutical laboratories and for sweets.

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Glass fibre filters, without binder

Supplier: PRAT DUMAS

Borosilicate glass fibre filters without binder.

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Joseph paper

Supplier: PRAT DUMAS

Joseph paper is ideal for precise cleaning applications. Superior quality for wiping or packaging delicate objects.

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Bench protection papers

Supplier: PRAT DUMAS

These protection papers are available in different formats. They can be used for bench protection as well as for the packaging of glass parts.

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Glass Microfiber Filter Paper

Supplier: PRAT DUMAS

These glass microfiber filter papers allow fast filtration and high particle retention. They can be used at temperatures up to 380 °C.

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Ashless quantitative filter papers

Supplier: PRAT DUMAS

The ashless papers are manufactured with a very pure cotton cellulose base. They are purified with acid to reduce the amount of mineral material such as silicon, aluminium or magnesium oxides as far as possible. The residues of the paper after calcination are reduced to negligible quantities and do not affect the results of the qualitative analysis.

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Low ash hardened quantitative filter papers

Supplier: PRAT DUMAS

These papers are made of very pure cellulose and are washed in acids. They are designed for the quantitative analyses of routine applications and wet strengthened.

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Qualitative filter papers, slow filtration

Supplier: PRAT DUMAS

The filter papers are used for very effective, fine filtration of small particles precipitates.

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Qualitative filter papers, fast filtration

Supplier: PRAT DUMAS

Filters on creped surface. Frequently used to determine the content of sucrose in cane sugar and in the pharmaceutical laboratories for common filtration. Also used for the industrial filtrations.