Overview
The Barnstead Ventgard 25001 filter element is the consumable portion of the Ventgard filter assembly, manufactured by Thermo Scientific for use in Barnstead Classic Stills and other water purification equipment. This filter prevents air from entering the reservoir via the condenser atmospheric vent and protects stored water against airborne particulates, organics and CO2.
Key Features
- Filters dust and particles as small as 0.2µm from the air
- Under normal operating conditions, the filter will last up to 90 days or until 1,000 gallons of water have been drawn from the storage reservoir
- Protects stored water against airborne particulates, organics and CO2
- Simple replacement consumable element for field service
- Compatible with multiple Barnstead still models and water purification systems
Technical Specifications
| Manufacturer | Thermo Scientific |
| Brand | Barnstead Ventgard |
| Part Number | 25001 |
| Product Type | Ventgard Filter Element |
| Filtration Rating | 0.2µm |
| Operating Life | Up to 90 days or 1,000 gallons |
| Application | Water purification still atmospheric vent protection |
Typical Applications
The Barnstead Ventgard 25001 is used in laboratory water purification systems where distilled or ultrapure water must be protected from atmospheric contamination during storage. Applications include:
- Barnstead Classic Stills (10, 25, 50, 100, and 200 gallon models)
- Laboratory water storage reservoirs requiring atmospheric filtration
- Systems where water purity must be maintained over extended storage periods
- Research and pharmaceutical labs requiring contaminant-free distilled water
Compatibility & Replacements
Compatible With
- Barnstead Classic Stills (Models B3043, B3045, B3046, B3047, B3049)
- Barnstead Cabinetized Stills (Models A1065, A1085)
- Barnstead DIamond TII systems (30L and 60L models)
- Barnstead ROpure ST water purification systems
- Barnstead EASYpure RO and RoDi systems
- Barnstead EASYpure II RF reservoir caps
- Other Barnstead water purification system storage reservoirs
Replaces / Drop-In Replacement For
- LabStrong 25001LS is comparable to the Barnstead 25001 and 25001-DB Ventgard Filter
- OEM Model 25001-DB (variant with desiccant)
Works With
- Thermo Scientific Barnstead water purification equipment
- Laboratory water distillation and purification systems
- Standard 2-inch reservoir vent fittings














