Products

PRAT DUMAS Qualitative filter paper, low ash, slow flow rate

Low ash content paper (max 0.06%) used for fine filtration of small particles precipitates. Surface weight 100 g/m², pore 2 - 3 μm, thickness 200 μm. Available in flat disks and folded. Equivalent to: Whatman 5

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PRAT DUMAS Qualitative filter paper, low ash, medium flow rate

Superior Vellum paper made of pure cellulose and low ash (max 0.06%). General use in laboratory. Surface weight 85 g/m², pore 10 - 12 μm, thickness 200 μm. Available in flat disks and folded. Equivalent to: Whatman 1

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PRAT DUMAS Qualitative filter paper, low ash, fast flow rate

Low ash paper (max 0.06%) made of cotton fibers, used for thick and sticky liquids filtration. Surface weight 85 g/m², pore 10 - 12 μm, thickness 200 μm. Available in flat disks and folded. Equivalent to: Whatman 4

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BRANCHIA ashless quantitative filter paper, medium-low flow rate

Ashless paper ( 30 kPa. Available in discs (presented in packages of 100 discs in box). Equivalence: Whatman 40

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BRANCHIA ashless quantitative filter paper, high flow rate

Ashless paper ( 30 kPa. Available in discs (presented in packages of 100 discs in box). Equivalence: Whatman 41

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BRANCHIA ashless quantitative filter paper, very low flow rate

Ashless paper (< 0.007%) made of cotton fibers. Very low flow rate, adequate for fine particles retention. Suitable for precipitate filtration of cold barium sulphate, lead sulphate, zinc and nickel sulphides, etc. Weight 100 g / m², thickness 160 μm, filtration time 300 s, retention 2 - 3 μm, wet bursting strength > 20 kPa. Available in discs (presented in packages of 100 discs in box). Equivalence: Whatman 42

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PRAT DUMAS ashless quantitative filter paper, fast flow rate

Ash-free paper (max 0.002%) made exclusively of cellulose cotton fibers. Its quick flow rate makes it recommendable for large precipitates, such as iron hydroxide and other metal sulfates. Surface weight 80 g/m², pore 12 - 16 μm, thickness 250 μm. Available in flat disks. Equivalent to: Whatman 41

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PRAT DUMAS quantitative filter paper, slow flow rate

Ash-free paper (max 0.002%) made exclusively of cellulose cotton fibers. Used for critical gravimetrical analysis. Surface weight 80 g/m², pore 7 - 9 μm, thickness 290 μm. Available in flat disks. Equivalent to: Whatman 42

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PRAT DUMAS quantitative filter paper, medium flow rate

Ash-free paper (max 0.002%) made exclusively of cellulose cotton fibers. Used for routine gravimetrical analysis. Intermediate filter in terms of flow rate and retention. Surface weight 80 g/m², pore 8 - 12 μm, thickness 270 μm. Available in flat disks. Equivalent to: Whatman 40

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BRANCHIA hardened quantitative filter paper, slow flow rate

Hardened low ash paper ( 30 kPa. Available in discs (presented in packages of 100 discs in a box). Equivalence: Whatman 50

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BRANCHIA hardened quantitative filter paper, medium flow rate

Hardened low ash paper ( 30 kPa. Available in discs (presented in packages of 100 discs in box). Equivalence: Whatman 52

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BRANCHIA hardened quantitative filter paper, high flow rate

Hardened low ash paper ( 30 kPa. Available in discs (presented in packages of 100 discs in box). Equivalence: Whatman 54

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