The Applied Biosystems 7500 Real-Time PCR System is a powerful platform for labs requiring superior performance and maximum dye versatility. The 7500 Real-Time PCR System is a sophisticated platform for users who require extended capabilities and maximum versatility. The 3rd generation platform features an innovative optical system that enhances sensitivity and lets you access a broader range of fluorophores. The variable excitation capability allows greater sensitivity for longer wavelength (red) dyes.