Cylindrical filter paper No. 86R (ID 21mm OD 25mm L 90mm) 25 pieces 35620250 1 box (25 pieces)

This cylindrical filter paper is made of fine borosilicate glass fibers and can withstand temperatures up to 500°C. It is mainly used for measuring dust concentration in general exhaust gas and for Soxhlet fat extractors. *When filtering gas, the filter may be damaged if it gets wet. In such a case, we recommend using No. 89 or No. 91S, which have water repellent properties. Composition: Glass fiber Weight (g/piece): 1.8 Thickness (mm): 1.6 Pressure loss (kPa): 0.30 Collection efficiency (0.3μm DOP%): >99.9 Retention particle size (μm): 1 Maximum operating temperature (℃): 500 Heat loss (%): 0.2 *Pressure loss: Value when using a product with OD 25mmL 90mm and an air flow rate of 5L/min. *Collection efficiency: Collection efficiency when air containing dispersed 0.3μm dioctyl phthalate particles is filtered using a product with an OD of 25mm and length of 90mm at an air flow rate of 5L/min. * Retained particle size: The particle size that can retain 90% or more of the seven types of powder dispersion specified in JIS Z 8901 when naturally filtered.