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

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