Brushes -Glass Buchner Funnel with 60ml G5 Sintered Disc Filtration Lab Vacuum Filtration Highlights generic brand Glass Buchner Funnel with 60ml G5 Sintered Disc Filtration Lab Vacuum Filtration Description: Both funnels and frits / sintered discs are made of borosilicate glass Resistant to strong acid corrosion for its borosilicate glass characteristic of good thickness uniformity and has a very smooth smooth surface Can be used immediately without filter paper Often used in combination with a Bchner flask to achieve vacuum filtration in laboratories Specification: 35ml Dimensions: Length: 141mm; Upper opening diameter: 43mm; Bottom opening diameter: 9mm 60ml Dimensions: Length: 151mm; Upper opening diameter: 49mm; Bottom opening diameter: 11mm Pore size and application: G1: 80-120m; Filter coarse particles. Collect or distribute coarse gases G2: 40-80 m; Filter partially coarse particles. Collect or dispense partially coarse gases G3: 15-40um; Filter mercury and general crystal precipitate and impurities during chemical analysis. Collect or dispense general gases. G4: 5-15m; Filter fine particle precipitates. Collect or dispense fine gases. G5: 2-5m; Filter the precipitates of extra-fine particles. Filter large bacteria. Package includes: 1pc Sintered Glass Buchner Funnel Note: Please allow 1-2mm inaccuracy in dimensions due to manual measurement. It should be filtered with hot hydrochloric acid or chromic sulfuric acid before first use, then rinsed with distilled water to remove any dust impurities that may be present in the filter. After each use or after a period of time, effective washing treatment should 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 filtration of concentrated hydrofluoric acid, hot concentrated phosphoric acid, hot or cold concentrated lye. Please note that these reagents may dissolve particles in the filter, causing the pores to expand or the filter to separate.