Frequency responses (phase and modulation) of CdSe Quantum Dots UTDCEt 550 in hexane acquired on ChronosFD using a 471-nm laser diode. The emission was collected through a high pass filter 520KV. The data is best fitted with a triple exponential decay time of: 2.3 ns - 4%, 18.3 ns - 79%, 67.8 ns - 17%.