Avitrolab Grade 141 Glass Microfiber Filter Paper

Item No.:
Alt. Part No.:
90 mm
Unit of Measure:
Pack of 100
Your Cost:
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These Avitrolab Grade 141 Glass Microfiber Filter Papers are binder-free and ideal for use in water and wastewater analysis, gravimetric analysis involving ignition of the sample and filtration of hot gases and liquids. They are recommended for use in environmental applications, biochemical testing, as pre-filters, and as direct sample application pads.

Binder-free glass microfibers feature maximum flow efficiency, fine particle retention, while maintaining a higher loading capacity than cellulose filters. Glass microfibers are chemical and thermal resistant and maintain their operational integrity in the presence of acids, alkalis, organic solvents, and temperatures at or above 500°C.

Key Features

  • 1µm particle retention
  • 66 mm sheet caliper
  • Depth type pre-filter before final membrane filters
  • Inert, no chemical reaction with liquid sample
  • Suitable for use in various standard methods

Specifications for Avitrolab Grade 141
Glass Microfiber Filter Paper
Particle Retention in µm 3.1
Filtration Speed Herzburg sec/100mls 19
Filtration Speed Rapidity mls/min 350
Frazier air permeability (cfm/ft) 11
Basis Weight (g/m²) 123
Sheet Caliper (mm) 0.66
Klemm (Capillary Rise) 1/16th/min 80
Wet-burst (cm) 17.8