Calcium Phosphate (CaPO) Transfection Kit is perfect to transfect HEK 293 cells. This transfection method, first described by Graham and Van Der Ebb in 1973, has been optimized in order to reach higher transfection efficiency. The CaPO transfection kit is simple and easy to use. It allows reaching between 95 and 100 % of HEK 293 transfected cells and a very high titer for virus production. *Ideal for virus production *High HEK 293 cells transfection efficiency *Suitable for producing recombinant proteins *Serum compatible *Simple, Ready-to-use and Rapid