2PCS High-Quality Sintered Glass Buchner Funnel - Corrosion Resistant Lab Filtration Equipment for Chemistry Experiments & Scientific Research

Description: - Both funnels and frits/sintered disks are made of borosilicate glass. - Resistant to strong corrosion for it's borosilicate glass feature. - Of good thickness uniformity and has very smooth, plain surface. - Can be used immediately without filter paper. - Often used in combination with a Büchner flask to make a vacuum filtration set-up in labs.Specification: - Length: 154mm/6.06inch; top opening diameter:49mm/1.92inch; bottom opening diameter: 11mm/0.43inch - Pore Size and Application: - G3:15-40 μm; Collect or distribute generalgases.Package Includes:2 Pieces Sintered Glass Buchner FunnelNote:Please allow 1-2mm inaccuracy in dimensions due to manual measurement.It should be filtered with hot hydrochloric or chromic sulphuric before use for the FIRST TIME, and then Rinsed with distilled water to remove any dust impurities that may be present in the filter.After each use or after a certain period of time, an effective washing treatment must be carried out to prevent the filtration effect from being affected by the clogging of the filter holes by the sediment.Glass filters are not suitable for the filtration of concentrated hydrofluoric , hot concentrated phosphoric , hot or cold concentrated lye. Please note that these reagents can dissolve the particles of the filter, causing the pores to expand or the filter to fall apart.