This ULTRA-WARE® microfiltration apparatus with Kontes® Stainless steel support is recommended when filtering viscous or proteinaceous solutions to give the maximum flow rate. This apparatus is also used to produce ultra clean filtrate since the Kontes® Stainless steel screen will not shed particles into the filtrate. Like the apparatus with fritted glass support, the ground joint connection eliminates the possible phthalate contamination that can occur when using silicone or neoprene stoppers. Funnel Capacity: 1000mL. Flask Capacity: 1000mL. Filter Size: 90mm. Support Type: Kontes® Stainless Steel. Kimble Chase #: 953855-1090.