United Scientific* Vacuum Filter Holder Set with PTFE Coated Funnel and Base, 47 mm - Each

Designed for bacteriological analysis where it is necessary to sterilize the filter holder with the membrane filter in place. The glass surface is coated with PTFE to avoid filter damage and membrane adhesion during autoclaving. Membrane filter not included. Complete set includes a PTFE-faced borosilicate glass funnel and PTFE-faced base, anodized aluminum spring clamp, and perforated silicone stopper. Parts are also available separately (see Replacement Parts below).

Specifications:
• Materials:
- Bororsilicate PTFE-faced glass funnel and base
- Anodized aluminum spring clamp
- Silicone stopper
• Filter diameter: 47 mm
• Filtration area: 9.6 cm²
• Funnel capacity: 300 mL
• Prefilter diameter:
- Thick depth prefilter: 35 mm
- Membrane prefilter: 47 mm
• Outlet fitting: 6 mm (¹/₄ in.) O.D. tubulated cap sidearm to vacuum
• Dimensions:
- Height: 22.9 cm
- Diameter: 7.6 cm
• Sterilization method: 30 UV sterilize or autoclave without prefilter in place

Replacement Parts:
1.) PTFE-Coated Glass Funnel, 300 mL (Cat. No. 891-10043)
2.) Spring Clamp, 47 mm (Cat. No. 891-10088)
3.) PTFE-Coated Glass Base, 47 mm (Cat. No. 891-10016)
4.) Silicone Stopper, Perforated, Size #8 (Cat. No. 891-10112)

Optional Accessories:
• Vacuum Filtering Flask, 1 L capacity (Cat. No. 891-10034)
• Vacuum Filtering Flask, 4 L capacity (Cat. No. 891-10040)
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