Grade 50 Filter for Quantitative Analysis, Thin, Circle & Sheet

GE’s thinnest Whatman brand hardened filter paper, highly glazed Grade 50 supports vacuum filtration in Büchner funnels or Hirsch funnels and enables strong retention of very fine crystalline precipitates.

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Description

  • Thinner filter design (average thickness 115 µm) than most Büchner filter papers
  • Acid-treated for high wet-strength and chemical resistance
  • Nominal particle retention of 2.7 µm
  • Slow flow rates (Herzberg filtration speed 2685 s)
  • High purity and low ash content (0.015% ash maximum)
  • Compatible with Hirsch or Büchner funnels

GE offers three grades of hardened low ash filters. All three are designed for use in Hirsch and Büchner funnel applications and can be customized for an exact fit.

Wet-strengthened filters for vacuum filtration

For many vacuum filtration applications, a thin filter paper with a slow flow rate and excellent wet strength can maintain sample quality and purity. Because Grade 50 thin filter papers are hardened to minimize fiber shredding, they are a good choice for use as carriers in integrated circuits.

Grade 50 thin filter paper from GE Healthcare’s Life Sciences business is very strong when wet. It will withstand wet handling and precipitate removal by scraping.

Grade 50 is also available in Smear Tab format for wipe testing (e.g., testing of surfaces for radionuclide contamination).

   Parameter Grade 50 Filter for Quantitative Analysis, Thin, Circle & Sheet
   Grade : Grade 50
   Type : Hardened low ash
   Typical Particle Retention in Liquid1: 2.7 µm
   Nominal Thickness : 115 µm
   Typical water flow rate2 : 10 ml/min
   Nominal Basis Weight : 96 g/m²
   Nominal Air Flow Rate : 144 s/100 mL/in²
   Nominal Ash Content3 : 0.015%
   Material : High-quality cotton linters
   Alpha Cellulose Content Min. : ≥98%
   Application : For qualitative or quantitative filtrations requiring vacuum assistance on Büchner or 3-piece filter funnels.
   Format & Dimensions : Circle – Ø42.5, Ø55 mm, Ø70 mm, Ø90 mm, Ø110 mm, Ø125 mm, Ø150 mm, Ø185 mm, Ø240 mm, Ø320 mm, Ø500 mm

Sheet – 150 x 230 mm, 460 x 570 mm

   Pack Size : 100 pieces
  • 1Particle retention rating at 98% efficiency.
  • 2For 9 cm diameter
  • 3Ash is determined by ignition of the cellulose filter at 900°C in air.

Order now

To make your order, please contact us at  info@polyscientific.com.my or call us at +6 06 3350 690

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