All-Glass Filtration Assemblies

All-glass filter holder design restricts contact with reactive surfaces such as steel or rubber to minimize contamination of sample or filtrate.

All-Glass Filter Holder Product Benefits:

Standard 25 or 47mm filtration funnels mount on filtration flask using a ground glass joint
Support base outlet drip tube is positioned below the side arm connection to prevent sample aspiration into the vacuum line
All wetted surfaces are borosilicate glass with the exception of stainless steel and PTFE support options

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SKU	Filter Area	Support	Funnel Size	Price

311220	25 mm	Sintered Glass	15 ml	$197.58	0 in cart
311320	25 mm	Stainless Steel	15 ml	$216.40	0 in cart
311420	47 mm	Sintered Glass	300 ml	$307.93	0 in cart
311520	47 mm	Stainless Steel	300 ml	$284.84	0 in cart
311620	47 mm	PTFE	300 ml	$385.96	0 in cart

Specifications:

Materials:	25mm	47mm
Funnel, base unit and flask	Borosilicate glass
Support	Borosilicate glass frit, stainless steel, or PTFE
Connection:
Ground glass joint	14/20 female	40/35 female
Side arm	6 mm (3/8 inch)	6 mm (3/8 inch)
Capacity:
Funnel	15 ml	300 ml
Receiver flask	125 ml	1000 ml
Membrane Filter Compatibility:
Filter size	25 mm	47 mm
Prefilter size (if used with membrane)	16 mm	35 mm
Filtration area	2.1 cm²	9.6 cm²

Specification	Description
Support	Sintered glass, stainless steel screen, or PTFE
Funnel Base	Borosilicate
Membrane Filter Size	25 mm: 25 mm; 47 mm: 47 mm
Prefilter Size	25 mm: 16 mm; 47 mm: 35 mm
Filtration Area	25 mm: 2.1 cm²; 47 mm: 9.6 cm²