Product Description
Sterilizing a filter holder with the membrane already in place saves time and reduces handling risk. This 47 mm assembly is recommended for autoclaving with the filter installed, and its PTFE-faced surfaces stop the membrane from sticking to the ground glass afterward.
This listing is for Wheaton catalog number 419370: 47mm Filtration Assembly With No. 8 Stopper and PTFE Faced Support Base and Funnel, 1000 mL. A 300 mL funnel clamps onto a 40-60 micron fritted base, both with PTFE-faced contact surfaces, and a No. 8 stopper seats the unit in a filter flask. It handles up to 1000 mL for particulate or microbiological analysis. Glass parts are WHEATON 33 low extractable borosilicate meeting USP Type I and ASTM E438 Type I, Class A; flasks are sold separately. Order it from LIGHT LABS and keep your lab stocked with genuine DWK Life Sciences products.
Key Features
- Autoclave with filter in place – Recommended for sterilizing the assembly with the membrane installed.
- PTFE-faced surfaces – Keep membranes from adhering to ground glass.
- Fritted glass support – 40-60 micron frit distributes vacuum evenly.
- 300 mL funnel – Handles up to 1000 mL of liquid per test.
- Low extractable glass – Meets USP Type I and ASTM E438 Type I, Class A requirements.
Specifications
| Catalog Number | 419370 |
| Brand | Wheaton (DWK Life Sciences) |
| Description | 47mm Filtration Assembly With No. 8 Stopper and PTFE Faced Support Base and Funnel, 1000 mL |
| Sold As | Each |
| Glass Type | WHEATON 33 low extractable borosilicate |
| Glass Standard | USP Type I; ASTM E438 Type I, Class A |
| Filter Diameter | 47 mm |
| Funnel Capacity | 300 mL |
| Frit Porosity | 40-60 micron |
| Contact Surfaces | PTFE faced |
| Flask Connection | No. 8 stopper |
| Autoclavable | Yes, with filter in place |
Applications
- Sterile membrane filtration
- Microbiological contamination testing
- Particulate analysis
- Water quality testing
