For concentrating lentivirus from clarified culture medium at low speed centrifugation.

Concentrate lentiviral particles up to 1000 folds from culture medium.
Prepare pure and highly infectious lentiviral particles with a very simple protocol.
Non-toxic, sterile, endotoxcin-free solution.
Lentivirus can be used for in vivo infections if it is further purified using a 100 KDa MWCO spin concentrator