Dust monitor filter paper HE-40T 60mm 100 sheets 36561060 1 box (100 sheets)

This filter paper is made of cellulose fibers and fine glass fibers, and is backed with cloth (cheesecloth) to increase its strength and has been treated to make it water-repellent. Because of its excellent strength, it can also be used in roll-type continuous dust sampling equipment. It can be attached to various dust samplers. Suitable for filter paper specified in JIS Z 4601 (radioactive dust sampler). Dimensions (mm): Φ60 Mass (g/m^2): 145 Thickness (mm): 0.41 Pressure loss (kPa): 0.27 Water repellency (kPa): 4.9 Air flow rate (cm/s)/Collection efficiency (%): 55/99.7, 80/99.8, 135/99.9 *Collection efficiency: Measured from the upstream and downstream particle concentrations when 0.31 μm polystyrene latex particles are filtered at an air flow rate of 55 cm/s to 135 cm/s.