Vacuum blood collection tubes contain microparticles of silicon dioxide (Silica SiO2) which is applied to the internal walls of the tube and activate blood clotting.

The separator, in the form of gel at the bottom of the tube, is used to separate the obtained serum from the clot.

Tubes with separation gel are used to ensure a stable barrier between the clot and the serum during sample transportation and storage.

Acti-Fine ® tubes are used in immunochemical and biochemical tests and drug monitoring.
Clotting time: 30 min.