Store serum up to seven days when it is essential to prevent any exchange of ions.
- One-way valve permits a physical gap to be created between the serum/plasma and clot, and prevents backflow into the primary collection tube
- Use with glass or plastic collection tubes
- Technique reduces second centrifugation, tube labeling and sample preparation time
- Allows direct sampling into automatic laboratory equipment
- Eliminates fibrin, particulate matter and equipment downtime








