About Pacific Orange

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Pacific Orange™ (Pac Orange, PacOrange) is an orange-emitting organic fluorophore that can be excited by the 405 nm violet laser and captured with a 585/42 nm bandpass filter. Pacific Orange has an excititaion peak at 400 nm and an emission peak at 551 nm. Pacific Orange remains strongly fluorescent up to neutral pH. Pacific Orange is a trademark of ThermoFisher. This dye comes from the ‘Pacific’ dye product line manufactured by Invitrogen (ThermoFisher) that includes Pacific Blue, Pacific Green, and Pacific Orange. These dyes are often used together because they are all be excited by the same 405 nm violet laser and all three dyes have distinct emission peaks at 455, 500, and 551 nm respectively, so emission peaks do not interfere with each other.

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