Quartz Microfibre Filter, 203 x 254 mm, Grade QFH, 85 g/sqm, without binder, 50 sheets

Quartz Fiber Filter

Recommended filters for controlling air pollution and for particle determination at high temperatures.

• Made of pure quartz microfibers (SiO2), without binders or additives.
• deal for trace analysis due to extremely low metal contents.< br>Excellent absorption of very fine particles thanks to the adsorption mechanism of the quartz fibers.
• Air permeability is very high - allows high flow rates.
  Chemical stability: excellent stability with almost no loss of the filter material due to chemical reactions, even under extreme acidic conditions gases (HCl, SO2, SO3, H2SO4, NO and NO3); except hydrofluoric acid.
• Excellent resistance to chemical solvents.
• Stability at high temperatures: higher resistance than glass microfiber up to 1000ºC; in addition, loss of normal properties.
• The QFH variety is available as a round filter with the following sizes (in millimeters): 37 – 47 - 70 – 150.

This product is equivalent to: Schleicher-Schüll QF 20 -- Whatman QMA -- Macherey Nagel QF10 -- Sartorius T293