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PDDA Product Name Description Pricing QSQ-580 CdSSe/ZnS Quantum Dots w/Positively Charged PDDA, 580 nm Pricing QSQ-525 CdSSe/ZnS Quantum Dots w/Positively Charged PDDA, 525 nm Pricing QSQ-645 CdSSe/ZnS Quantum Dots w/Positively Charged PDDA, 645 nm Pricing QSQ-450 CdSSe/ZnS Quantum Dots w/Positively Charged PDDA, 450 nm Pricing QSQ-600 CdSSe/ZnS Quantum Dots w/Positively Charged PDDA, 600 nm Pricing QSQ-540 CdSSe/ZnS Quantum Dots w/Positively Charged PDDA, 540 nm Pricing QSQ-665 CdSSe/ZnS Quantum Dots w/Positively Charged PDDA, 665 nm Pricing QSQ-490 CdSSe/ZnS Quantum Dots w/Positively Charged PDDA, 490 nm Pricing QSQ-620 CdSSe/ZnS Quantum Dots w/Positively Charged PDDA, 620 nm Pricing