Ex-stock

Filter Papers — Qualitative, Quantitative and Ashless

Cellulose filter papers in a full range of retentions and flow rates, including ashless grades for gravimetric work.

Typical applications

  • Gravimetric analysis and ignition
  • Suspended solids determination
  • Routine clarification

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Worth knowing before you order

Ashless paper matters when the residue is ignited and weighed — an ordinary qualitative paper leaves enough ash to shift a gravimetric result. Match the grade to the precipitate: slow-flow for fine precipitates like barium sulphate, fast for coarse.

Identification

Identification for Filter Papers — Qualitative, Quantitative and Ashless
MaterialCellulose
Sizes available55 mm · 70 mm · 90 mm · 110 mm · 125 mm · 150 mm · 185 mm · 240 mm

Specification

Technical specification for Filter Papers — Qualitative, Quantitative and Ashless
Qualitative gradesFast, medium and slow flow
Ashless gradesAsh content < 0.007%
Retention range2.5 µm to 25 µm
FormatsCircles, sheets and folded (fluted) circles

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