• Chemically inert and resistant to high temperatures
• Sample aggressive contaminants
• Autoclave repeatedly without loss of performance

• Uniform porosity and thickness

• Bacteriostatic

• Ideal for x-ray diffraction and other analyses
• Flat, smooth surface
• NIOSH methods for x-ray diffraction analysis of crystalline silica, lead sulfide, boron carbide, and chrysotile asbestos
• Organic materials by a variety of analytical methods

• No fibers to contaminate sample

• Hydrophilic and inorganic

• Environmentally friendly — recyclable
• Can be cleaned and reused