1.It can be widely used in chemistry analysis, pharmaceutical, sanitation test, water quality analysis, science research fields and so on. 2.It is convenient to filtrate several samples at the same time. 3.Each holder has individual control valve, so one vacuum pump can support operations of single and multi-branch manifold filter. 4.316L stainless steel holder, corrosion resistance, acid and alkali resistance. Active carbon Filter Higher capacity sorbents light weight, international dimensions, replaceable media, remove both dust and contaminated gases.