TheRainbow calibration particles, 8 peaks are designed for routine calibration of flow cytometers. Rainbow calibration particles, 8 peaks are commonly used in many laboratories for Quality Control and long-term performance of the analyser. The Rainbow calibration, 8 peaks Cat. No. RCP-30-5A) are used in EuroFlow™ standardization guidelines throughout the study of initial PMT characterization, to set target MFI values and daily performance tracking of the flow cytometers.