This stand alone PCR machine is designed for easy and convenient classroom use. To save valuable lab set up time, this unit is pre-programmed with Edvotek PCR protocols. It can accommodate up to 49 0.2 ml PCR tubes and displays readings on a large seven digit LCD screen. A magnetic, heated lid is also built-in for student safety. Temperature range: 4-99° C. Max Ramp Rate: 3° C/sec.