Product Description
Viscous or protein-rich samples can clog a fritted base, so a screen support is often the better choice. This 25 mm vacuum filtration assembly pairs a 15 mL graduated glass funnel with a stainless steel support screen, helping produce ultraclean filtrate and steady flow through difficult solutions.
This listing is for Wheaton catalog number 419327: 25mm Filtration Assemblies With No. 5 Stopper Connections and Stainless Steel Support, 15mL Graduated Funnel. The funnel clamps over the stainless screen on a glass base, and the unit connects to a filter flask through a No. 5 stopper. Glass parts are WHEATON 33 low extractable borosilicate meeting USP Type I and ASTM E438 Type I, Class A. Filter flasks are not included and use a #2 hose connection for 1/4 in ID tubing. LIGHT LABS ships genuine DWK Life Sciences products with knowledgeable support from our Englewood, Colorado team.
Key Features
- Stainless steel support screen – Handles viscous and proteinaceous solutions with less clogging.
- Graduated 15 mL funnel – Lets users gauge sample volume directly.
- No. 5 stopper connection – Seats into standard filter flasks.
- Ultraclean filtrate – Suited to work where filtrate purity matters.
- Low extractable glass – Meets USP Type I and ASTM E438 Type I, Class A requirements.
Specifications
| Catalog Number | 419327 |
| Brand | Wheaton (DWK Life Sciences) |
| Description | 25mm Filtration Assemblies With No. 5 Stopper Connections and Stainless Steel Support, 15mL Graduated Funnel |
| Sold As | Each |
| Glass Type | WHEATON 33 low extractable borosilicate |
| Glass Standard | USP Type I; ASTM E438 Type I, Class A |
| Filter Diameter | 25 mm |
| Funnel Capacity | 15 mL |
| Support | Stainless steel screen |
| Flask Connection | No. 5 stopper |
Applications
- Filtration of protein solutions
- Viscous sample filtration
- Ultraclean filtrate preparation
- Membrane filtration of small volumes
